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Diffstat (limited to 'deps/raylib/src/rmodels.c')
| -rw-r--r-- | deps/raylib/src/rmodels.c | 6796 |
1 files changed, 6796 insertions, 0 deletions
diff --git a/deps/raylib/src/rmodels.c b/deps/raylib/src/rmodels.c new file mode 100644 index 0000000..b5830b2 --- /dev/null +++ b/deps/raylib/src/rmodels.c @@ -0,0 +1,6796 @@ +/********************************************************************************************** +* +* rmodels - Basic functions to draw 3d shapes and load and draw 3d models +* +* CONFIGURATION: +* #define SUPPORT_MODULE_RMODELS +* rmodels module is included in the build +* +* #define SUPPORT_FILEFORMAT_OBJ +* #define SUPPORT_FILEFORMAT_MTL +* #define SUPPORT_FILEFORMAT_IQM +* #define SUPPORT_FILEFORMAT_GLTF +* #define SUPPORT_FILEFORMAT_VOX +* #define SUPPORT_FILEFORMAT_M3D +* Selected desired fileformats to be supported for model data loading. +* +* #define SUPPORT_MESH_GENERATION +* Support procedural mesh generation functions, uses external par_shapes.h library +* NOTE: Some generated meshes DO NOT include generated texture coordinates +* +* +* LICENSE: zlib/libpng +* +* Copyright (c) 2013-2024 Ramon Santamaria (@raysan5) +* +* This software is provided "as-is", without any express or implied warranty. In no event +* will the authors be held liable for any damages arising from the use of this software. +* +* Permission is granted to anyone to use this software for any purpose, including commercial +* applications, and to alter it and redistribute it freely, subject to the following restrictions: +* +* 1. The origin of this software must not be misrepresented; you must not claim that you +* wrote the original software. If you use this software in a product, an acknowledgment +* in the product documentation would be appreciated but is not required. +* +* 2. Altered source versions must be plainly marked as such, and must not be misrepresented +* as being the original software. +* +* 3. This notice may not be removed or altered from any source distribution. +* +**********************************************************************************************/ + +#include "raylib.h" // Declares module functions + +// Check if config flags have been externally provided on compilation line +#if !defined(EXTERNAL_CONFIG_FLAGS) + #include "config.h" // Defines module configuration flags +#endif + +#if defined(SUPPORT_MODULE_RMODELS) + +#include "utils.h" // Required for: TRACELOG(), LoadFileData(), LoadFileText(), SaveFileText() +#include "rlgl.h" // OpenGL abstraction layer to OpenGL 1.1, 2.1, 3.3+ or ES2 +#include "raymath.h" // Required for: Vector3, Quaternion and Matrix functionality + +#include <stdio.h> // Required for: sprintf() +#include <stdlib.h> // Required for: malloc(), calloc(), free() +#include <string.h> // Required for: memcmp(), strlen(), strncpy() +#include <math.h> // Required for: sinf(), cosf(), sqrtf(), fabsf() + +#if defined(SUPPORT_FILEFORMAT_OBJ) || defined(SUPPORT_FILEFORMAT_MTL) + #define TINYOBJ_MALLOC RL_MALLOC + #define TINYOBJ_CALLOC RL_CALLOC + #define TINYOBJ_REALLOC RL_REALLOC + #define TINYOBJ_FREE RL_FREE + + #define TINYOBJ_LOADER_C_IMPLEMENTATION + #include "external/tinyobj_loader_c.h" // OBJ/MTL file formats loading +#endif + +#if defined(SUPPORT_FILEFORMAT_GLTF) + #define CGLTF_MALLOC RL_MALLOC + #define CGLTF_FREE RL_FREE + + #define CGLTF_IMPLEMENTATION + #include "external/cgltf.h" // glTF file format loading +#endif + +#if defined(SUPPORT_FILEFORMAT_VOX) + #define VOX_MALLOC RL_MALLOC + #define VOX_CALLOC RL_CALLOC + #define VOX_REALLOC RL_REALLOC + #define VOX_FREE RL_FREE + + #define VOX_LOADER_IMPLEMENTATION + #include "external/vox_loader.h" // VOX file format loading (MagikaVoxel) +#endif + +#if defined(SUPPORT_FILEFORMAT_M3D) + #define M3D_MALLOC RL_MALLOC + #define M3D_REALLOC RL_REALLOC + #define M3D_FREE RL_FREE + + #define M3D_IMPLEMENTATION + #include "external/m3d.h" // Model3D file format loading +#endif + +#if defined(SUPPORT_MESH_GENERATION) + #define PAR_MALLOC(T, N) ((T*)RL_MALLOC(N*sizeof(T))) + #define PAR_CALLOC(T, N) ((T*)RL_CALLOC(N*sizeof(T), 1)) + #define PAR_REALLOC(T, BUF, N) ((T*)RL_REALLOC(BUF, sizeof(T)*(N))) + #define PAR_FREE RL_FREE + + #if defined(_MSC_VER) // Disable some MSVC warning + #pragma warning(push) + #pragma warning(disable : 4244) + #pragma warning(disable : 4305) + #endif + + #define PAR_SHAPES_IMPLEMENTATION + #include "external/par_shapes.h" // Shapes 3d parametric generation + + #if defined(_MSC_VER) + #pragma warning(pop) // Disable MSVC warning suppression + #endif +#endif + +#if defined(_WIN32) + #include <direct.h> // Required for: _chdir() [Used in LoadOBJ()] + #define CHDIR _chdir +#else + #include <unistd.h> // Required for: chdir() (POSIX) [Used in LoadOBJ()] + #define CHDIR chdir +#endif + +//---------------------------------------------------------------------------------- +// Defines and Macros +//---------------------------------------------------------------------------------- +#ifndef MAX_MATERIAL_MAPS + #define MAX_MATERIAL_MAPS 12 // Maximum number of maps supported +#endif +#ifndef MAX_MESH_VERTEX_BUFFERS + #define MAX_MESH_VERTEX_BUFFERS 9 // Maximum vertex buffers (VBO) per mesh +#endif + +//---------------------------------------------------------------------------------- +// Types and Structures Definition +//---------------------------------------------------------------------------------- +// ... + +//---------------------------------------------------------------------------------- +// Global Variables Definition +//---------------------------------------------------------------------------------- +// ... + +//---------------------------------------------------------------------------------- +// Module specific Functions Declaration +//---------------------------------------------------------------------------------- +#if defined(SUPPORT_FILEFORMAT_OBJ) +static Model LoadOBJ(const char *fileName); // Load OBJ mesh data +#endif +#if defined(SUPPORT_FILEFORMAT_IQM) +static Model LoadIQM(const char *fileName); // Load IQM mesh data +static ModelAnimation *LoadModelAnimationsIQM(const char *fileName, int *animCount); // Load IQM animation data +#endif +#if defined(SUPPORT_FILEFORMAT_GLTF) +static Model LoadGLTF(const char *fileName); // Load GLTF mesh data +static ModelAnimation *LoadModelAnimationsGLTF(const char *fileName, int *animCount); // Load GLTF animation data +#endif +#if defined(SUPPORT_FILEFORMAT_VOX) +static Model LoadVOX(const char *filename); // Load VOX mesh data +#endif +#if defined(SUPPORT_FILEFORMAT_M3D) +static Model LoadM3D(const char *filename); // Load M3D mesh data +static ModelAnimation *LoadModelAnimationsM3D(const char *fileName, int *animCount); // Load M3D animation data +#endif +#if defined(SUPPORT_FILEFORMAT_OBJ) || defined(SUPPORT_FILEFORMAT_MTL) +static void ProcessMaterialsOBJ(Material *rayMaterials, tinyobj_material_t *materials, int materialCount); // Process obj materials +#endif + +//---------------------------------------------------------------------------------- +// Module Functions Definition +//---------------------------------------------------------------------------------- + +// Draw a line in 3D world space +void DrawLine3D(Vector3 startPos, Vector3 endPos, Color color) +{ + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + rlVertex3f(startPos.x, startPos.y, startPos.z); + rlVertex3f(endPos.x, endPos.y, endPos.z); + rlEnd(); +} + +// Draw a point in 3D space, actually a small line +void DrawPoint3D(Vector3 position, Color color) +{ + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + rlVertex3f(0.0f, 0.0f, 0.0f); + rlVertex3f(0.0f, 0.0f, 0.1f); + rlEnd(); + rlPopMatrix(); +} + +// Draw a circle in 3D world space +void DrawCircle3D(Vector3 center, float radius, Vector3 rotationAxis, float rotationAngle, Color color) +{ + rlPushMatrix(); + rlTranslatef(center.x, center.y, center.z); + rlRotatef(rotationAngle, rotationAxis.x, rotationAxis.y, rotationAxis.z); + + rlBegin(RL_LINES); + for (int i = 0; i < 360; i += 10) + { + rlColor4ub(color.r, color.g, color.b, color.a); + + rlVertex3f(sinf(DEG2RAD*i)*radius, cosf(DEG2RAD*i)*radius, 0.0f); + rlVertex3f(sinf(DEG2RAD*(i + 10))*radius, cosf(DEG2RAD*(i + 10))*radius, 0.0f); + } + rlEnd(); + rlPopMatrix(); +} + +// Draw a color-filled triangle (vertex in counter-clockwise order!) +void DrawTriangle3D(Vector3 v1, Vector3 v2, Vector3 v3, Color color) +{ + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + rlVertex3f(v1.x, v1.y, v1.z); + rlVertex3f(v2.x, v2.y, v2.z); + rlVertex3f(v3.x, v3.y, v3.z); + rlEnd(); +} + +// Draw a triangle strip defined by points +void DrawTriangleStrip3D(const Vector3 *points, int pointCount, Color color) +{ + if (pointCount < 3) return; // Security check + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 2; i < pointCount; i++) + { + if ((i%2) == 0) + { + rlVertex3f(points[i].x, points[i].y, points[i].z); + rlVertex3f(points[i - 2].x, points[i - 2].y, points[i - 2].z); + rlVertex3f(points[i - 1].x, points[i - 1].y, points[i - 1].z); + } + else + { + rlVertex3f(points[i].x, points[i].y, points[i].z); + rlVertex3f(points[i - 1].x, points[i - 1].y, points[i - 1].z); + rlVertex3f(points[i - 2].x, points[i - 2].y, points[i - 2].z); + } + } + rlEnd(); +} + +// Draw cube +// NOTE: Cube position is the center position +void DrawCube(Vector3 position, float width, float height, float length, Color color) +{ + float x = 0.0f; + float y = 0.0f; + float z = 0.0f; + + rlPushMatrix(); + // NOTE: Transformation is applied in inverse order (scale -> rotate -> translate) + rlTranslatef(position.x, position.y, position.z); + //rlRotatef(45, 0, 1, 0); + //rlScalef(1.0f, 1.0f, 1.0f); // NOTE: Vertices are directly scaled on definition + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + // Front face + rlNormal3f(0.0f, 0.0f, 1.0f); + rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left + + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Right + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right + + // Back face + rlNormal3f(0.0f, 0.0f, -1.0f); + rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Left + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right + + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left + + // Top face + rlNormal3f(0.0f, 1.0f, 0.0f); + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left + rlVertex3f(x - width/2, y + height/2, z + length/2); // Bottom Left + rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right + + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left + rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right + + // Bottom face + rlNormal3f(0.0f, -1.0f, 0.0f); + rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Left + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right + rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left + + rlVertex3f(x + width/2, y - height/2, z - length/2); // Top Right + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right + rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Left + + // Right face + rlNormal3f(1.0f, 0.0f, 0.0f); + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left + + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left + + // Left face + rlNormal3f(-1.0f, 0.0f, 0.0f); + rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Right + + rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left + rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right + rlEnd(); + rlPopMatrix(); +} + +// Draw cube (Vector version) +void DrawCubeV(Vector3 position, Vector3 size, Color color) +{ + DrawCube(position, size.x, size.y, size.z, color); +} + +// Draw cube wires +void DrawCubeWires(Vector3 position, float width, float height, float length, Color color) +{ + float x = 0.0f; + float y = 0.0f; + float z = 0.0f; + + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + + // Front face + //------------------------------------------------------------------ + // Bottom line + rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom left + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom right + + // Left line + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom right + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top right + + // Top line + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top right + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top left + + // Right line + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top left + rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom left + + // Back face + //------------------------------------------------------------------ + // Bottom line + rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom left + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom right + + // Left line + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom right + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top right + + // Top line + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top right + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top left + + // Right line + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top left + rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom left + + // Top face + //------------------------------------------------------------------ + // Left line + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top left front + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top left back + + // Right line + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top right front + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top right back + + // Bottom face + //------------------------------------------------------------------ + // Left line + rlVertex3f(x - width/2, y - height/2, z + length/2); // Top left front + rlVertex3f(x - width/2, y - height/2, z - length/2); // Top left back + + // Right line + rlVertex3f(x + width/2, y - height/2, z + length/2); // Top right front + rlVertex3f(x + width/2, y - height/2, z - length/2); // Top right back + rlEnd(); + rlPopMatrix(); +} + +// Draw cube wires (vector version) +void DrawCubeWiresV(Vector3 position, Vector3 size, Color color) +{ + DrawCubeWires(position, size.x, size.y, size.z, color); +} + +// Draw sphere +void DrawSphere(Vector3 centerPos, float radius, Color color) +{ + DrawSphereEx(centerPos, radius, 16, 16, color); +} + +// Draw sphere with extended parameters +void DrawSphereEx(Vector3 centerPos, float radius, int rings, int slices, Color color) +{ +#if 0 + // Basic implementation, do not use it! + // For a sphere with 16 rings and 16 slices it requires 8640 cos()/sin() function calls! + // New optimized version below only requires 4 cos()/sin() calls + + rlPushMatrix(); + // NOTE: Transformation is applied in inverse order (scale -> translate) + rlTranslatef(centerPos.x, centerPos.y, centerPos.z); + rlScalef(radius, radius, radius); + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 0; i < (rings + 2); i++) + { + for (int j = 0; j < slices; j++) + { + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*sinf(DEG2RAD*(360.0f*j/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*i)), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*cosf(DEG2RAD*(360.0f*j/slices))); + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices))); + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*j/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*j/slices))); + + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*sinf(DEG2RAD*(360.0f*j/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*i)), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*cosf(DEG2RAD*(360.0f*j/slices))); + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i))), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices))); + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices))); + } + } + rlEnd(); + rlPopMatrix(); +#endif + + rlPushMatrix(); + // NOTE: Transformation is applied in inverse order (scale -> translate) + rlTranslatef(centerPos.x, centerPos.y, centerPos.z); + rlScalef(radius, radius, radius); + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + float ringangle = DEG2RAD*(180.0f/(rings + 1)); // Angle between latitudinal parallels + float sliceangle = DEG2RAD*(360.0f/slices); // Angle between longitudinal meridians + + float cosring = cosf(ringangle); + float sinring = sinf(ringangle); + float cosslice = cosf(sliceangle); + float sinslice = sinf(sliceangle); + + Vector3 vertices[4] = { 0 }; // Required to store face vertices + vertices[2] = (Vector3){ 0, 1, 0 }; + vertices[3] = (Vector3){ sinring, cosring, 0 }; + + for (int i = 0; i < rings + 1; i++) + { + for (int j = 0; j < slices; j++) + { + vertices[0] = vertices[2]; // Rotate around y axis to set up vertices for next face + vertices[1] = vertices[3]; + vertices[2] = (Vector3){ cosslice*vertices[2].x - sinslice*vertices[2].z, vertices[2].y, sinslice*vertices[2].x + cosslice*vertices[2].z }; // Rotation matrix around y axis + vertices[3] = (Vector3){ cosslice*vertices[3].x - sinslice*vertices[3].z, vertices[3].y, sinslice*vertices[3].x + cosslice*vertices[3].z }; + + rlVertex3f(vertices[0].x, vertices[0].y, vertices[0].z); + rlVertex3f(vertices[3].x, vertices[3].y, vertices[3].z); + rlVertex3f(vertices[1].x, vertices[1].y, vertices[1].z); + + rlVertex3f(vertices[0].x, vertices[0].y, vertices[0].z); + rlVertex3f(vertices[2].x, vertices[2].y, vertices[2].z); + rlVertex3f(vertices[3].x, vertices[3].y, vertices[3].z); + } + + vertices[2] = vertices[3]; // Rotate around z axis to set up starting vertices for next ring + vertices[3] = (Vector3){ cosring*vertices[3].x + sinring*vertices[3].y, -sinring*vertices[3].x + cosring*vertices[3].y, vertices[3].z }; // Rotation matrix around z axis + } + rlEnd(); + rlPopMatrix(); +} + +// Draw sphere wires +void DrawSphereWires(Vector3 centerPos, float radius, int rings, int slices, Color color) +{ + rlPushMatrix(); + // NOTE: Transformation is applied in inverse order (scale -> translate) + rlTranslatef(centerPos.x, centerPos.y, centerPos.z); + rlScalef(radius, radius, radius); + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 0; i < (rings + 2); i++) + { + for (int j = 0; j < slices; j++) + { + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*sinf(DEG2RAD*(360.0f*j/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*i)), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*cosf(DEG2RAD*(360.0f*j/slices))); + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices))); + + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices))); + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*j/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*j/slices))); + + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*j/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*j/slices))); + rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*sinf(DEG2RAD*(360.0f*j/slices)), + sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*i)), + cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*cosf(DEG2RAD*(360.0f*j/slices))); + } + } + rlEnd(); + rlPopMatrix(); +} + +// Draw a cylinder +// NOTE: It could be also used for pyramid and cone +void DrawCylinder(Vector3 position, float radiusTop, float radiusBottom, float height, int sides, Color color) +{ + if (sides < 3) sides = 3; + + const float angleStep = 360.0f/sides; + + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + if (radiusTop > 0) + { + // Draw Body ------------------------------------------------------------------------------------- + for (int i = 0; i < sides; i++) + { + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusBottom, 0, cosf(DEG2RAD*i*angleStep)*radiusBottom); //Bottom Left + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusBottom, 0, cosf(DEG2RAD*(i+1)*angleStep)*radiusBottom); //Bottom Right + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusTop, height, cosf(DEG2RAD*(i+1)*angleStep)*radiusTop); //Top Right + + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusTop, height, cosf(DEG2RAD*i*angleStep)*radiusTop); //Top Left + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusBottom, 0, cosf(DEG2RAD*i*angleStep)*radiusBottom); //Bottom Left + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusTop, height, cosf(DEG2RAD*(i+1)*angleStep)*radiusTop); //Top Right + } + + // Draw Cap -------------------------------------------------------------------------------------- + for (int i = 0; i < sides; i++) + { + rlVertex3f(0, height, 0); + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusTop, height, cosf(DEG2RAD*i*angleStep)*radiusTop); + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusTop, height, cosf(DEG2RAD*(i+1)*angleStep)*radiusTop); + } + } + else + { + // Draw Cone ------------------------------------------------------------------------------------- + for (int i = 0; i < sides; i++) + { + rlVertex3f(0, height, 0); + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusBottom, 0, cosf(DEG2RAD*i*angleStep)*radiusBottom); + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusBottom, 0, cosf(DEG2RAD*(i+1)*angleStep)*radiusBottom); + } + } + + // Draw Base ----------------------------------------------------------------------------------------- + for (int i = 0; i < sides; i++) + { + rlVertex3f(0, 0, 0); + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusBottom, 0, cosf(DEG2RAD*(i+1)*angleStep)*radiusBottom); + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusBottom, 0, cosf(DEG2RAD*i*angleStep)*radiusBottom); + } + + rlEnd(); + rlPopMatrix(); +} + +// Draw a cylinder with base at startPos and top at endPos +// NOTE: It could be also used for pyramid and cone +void DrawCylinderEx(Vector3 startPos, Vector3 endPos, float startRadius, float endRadius, int sides, Color color) +{ + if (sides < 3) sides = 3; + + Vector3 direction = { endPos.x - startPos.x, endPos.y - startPos.y, endPos.z - startPos.z }; + if ((direction.x == 0) && (direction.y == 0) && (direction.z == 0)) return; // Security check + + // Construct a basis of the base and the top face: + Vector3 b1 = Vector3Normalize(Vector3Perpendicular(direction)); + Vector3 b2 = Vector3Normalize(Vector3CrossProduct(b1, direction)); + + float baseAngle = (2.0f*PI)/sides; + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 0; i < sides; i++) + { + // Compute the four vertices + float s1 = sinf(baseAngle*(i + 0))*startRadius; + float c1 = cosf(baseAngle*(i + 0))*startRadius; + Vector3 w1 = { startPos.x + s1*b1.x + c1*b2.x, startPos.y + s1*b1.y + c1*b2.y, startPos.z + s1*b1.z + c1*b2.z }; + float s2 = sinf(baseAngle*(i + 1))*startRadius; + float c2 = cosf(baseAngle*(i + 1))*startRadius; + Vector3 w2 = { startPos.x + s2*b1.x + c2*b2.x, startPos.y + s2*b1.y + c2*b2.y, startPos.z + s2*b1.z + c2*b2.z }; + float s3 = sinf(baseAngle*(i + 0))*endRadius; + float c3 = cosf(baseAngle*(i + 0))*endRadius; + Vector3 w3 = { endPos.x + s3*b1.x + c3*b2.x, endPos.y + s3*b1.y + c3*b2.y, endPos.z + s3*b1.z + c3*b2.z }; + float s4 = sinf(baseAngle*(i + 1))*endRadius; + float c4 = cosf(baseAngle*(i + 1))*endRadius; + Vector3 w4 = { endPos.x + s4*b1.x + c4*b2.x, endPos.y + s4*b1.y + c4*b2.y, endPos.z + s4*b1.z + c4*b2.z }; + + if (startRadius > 0) + { + rlVertex3f(startPos.x, startPos.y, startPos.z); // | + rlVertex3f(w2.x, w2.y, w2.z); // T0 + rlVertex3f(w1.x, w1.y, w1.z); // | + } + // w2 x.-----------x startPos + rlVertex3f(w1.x, w1.y, w1.z); // | |\'. T0 / + rlVertex3f(w2.x, w2.y, w2.z); // T1 | \ '. / + rlVertex3f(w3.x, w3.y, w3.z); // | |T \ '. / + // | 2 \ T 'x w1 + rlVertex3f(w2.x, w2.y, w2.z); // | w4 x.---\-1-|---x endPos + rlVertex3f(w4.x, w4.y, w4.z); // T2 '. \ |T3/ + rlVertex3f(w3.x, w3.y, w3.z); // | '. \ | / + // '.\|/ + if (endRadius > 0) // 'x w3 + { + rlVertex3f(endPos.x, endPos.y, endPos.z); // | + rlVertex3f(w3.x, w3.y, w3.z); // T3 + rlVertex3f(w4.x, w4.y, w4.z); // | + } // + } + rlEnd(); +} + +// Draw a wired cylinder +// NOTE: It could be also used for pyramid and cone +void DrawCylinderWires(Vector3 position, float radiusTop, float radiusBottom, float height, int sides, Color color) +{ + if (sides < 3) sides = 3; + + const float angleStep = 360.0f/sides; + + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 0; i < sides; i++) + { + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusBottom, 0, cosf(DEG2RAD*i*angleStep)*radiusBottom); + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusBottom, 0, cosf(DEG2RAD*(i+1)*angleStep)*radiusBottom); + + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusBottom, 0, cosf(DEG2RAD*(i+1)*angleStep)*radiusBottom); + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusTop, height, cosf(DEG2RAD*(i+1)*angleStep)*radiusTop); + + rlVertex3f(sinf(DEG2RAD*(i+1)*angleStep)*radiusTop, height, cosf(DEG2RAD*(i+1)*angleStep)*radiusTop); + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusTop, height, cosf(DEG2RAD*i*angleStep)*radiusTop); + + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusTop, height, cosf(DEG2RAD*i*angleStep)*radiusTop); + rlVertex3f(sinf(DEG2RAD*i*angleStep)*radiusBottom, 0, cosf(DEG2RAD*i*angleStep)*radiusBottom); + } + rlEnd(); + rlPopMatrix(); +} + +// Draw a wired cylinder with base at startPos and top at endPos +// NOTE: It could be also used for pyramid and cone +void DrawCylinderWiresEx(Vector3 startPos, Vector3 endPos, float startRadius, float endRadius, int sides, Color color) +{ + if (sides < 3) sides = 3; + + Vector3 direction = { endPos.x - startPos.x, endPos.y - startPos.y, endPos.z - startPos.z }; + if ((direction.x == 0) && (direction.y == 0) && (direction.z == 0)) return; // Security check + + // Construct a basis of the base and the top face: + Vector3 b1 = Vector3Normalize(Vector3Perpendicular(direction)); + Vector3 b2 = Vector3Normalize(Vector3CrossProduct(b1, direction)); + + float baseAngle = (2.0f*PI)/sides; + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 0; i < sides; i++) + { + // Compute the four vertices + float s1 = sinf(baseAngle*(i + 0))*startRadius; + float c1 = cosf(baseAngle*(i + 0))*startRadius; + Vector3 w1 = { startPos.x + s1*b1.x + c1*b2.x, startPos.y + s1*b1.y + c1*b2.y, startPos.z + s1*b1.z + c1*b2.z }; + float s2 = sinf(baseAngle*(i + 1))*startRadius; + float c2 = cosf(baseAngle*(i + 1))*startRadius; + Vector3 w2 = { startPos.x + s2*b1.x + c2*b2.x, startPos.y + s2*b1.y + c2*b2.y, startPos.z + s2*b1.z + c2*b2.z }; + float s3 = sinf(baseAngle*(i + 0))*endRadius; + float c3 = cosf(baseAngle*(i + 0))*endRadius; + Vector3 w3 = { endPos.x + s3*b1.x + c3*b2.x, endPos.y + s3*b1.y + c3*b2.y, endPos.z + s3*b1.z + c3*b2.z }; + float s4 = sinf(baseAngle*(i + 1))*endRadius; + float c4 = cosf(baseAngle*(i + 1))*endRadius; + Vector3 w4 = { endPos.x + s4*b1.x + c4*b2.x, endPos.y + s4*b1.y + c4*b2.y, endPos.z + s4*b1.z + c4*b2.z }; + + rlVertex3f(w1.x, w1.y, w1.z); + rlVertex3f(w2.x, w2.y, w2.z); + + rlVertex3f(w1.x, w1.y, w1.z); + rlVertex3f(w3.x, w3.y, w3.z); + + rlVertex3f(w3.x, w3.y, w3.z); + rlVertex3f(w4.x, w4.y, w4.z); + } + rlEnd(); +} + +// Draw a capsule with the center of its sphere caps at startPos and endPos +void DrawCapsule(Vector3 startPos, Vector3 endPos, float radius, int slices, int rings, Color color) +{ + if (slices < 3) slices = 3; + + Vector3 direction = { endPos.x - startPos.x, endPos.y - startPos.y, endPos.z - startPos.z }; + + // draw a sphere if start and end points are the same + bool sphereCase = (direction.x == 0) && (direction.y == 0) && (direction.z == 0); + if (sphereCase) direction = (Vector3){0.0f, 1.0f, 0.0f}; + + // Construct a basis of the base and the caps: + Vector3 b0 = Vector3Normalize(direction); + Vector3 b1 = Vector3Normalize(Vector3Perpendicular(direction)); + Vector3 b2 = Vector3Normalize(Vector3CrossProduct(b1, direction)); + Vector3 capCenter = endPos; + + float baseSliceAngle = (2.0f*PI)/slices; + float baseRingAngle = PI*0.5f/rings; + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + // render both caps + for (int c = 0; c < 2; c++) + { + for (int i = 0; i < rings; i++) + { + for (int j = 0; j < slices; j++) + { + + // we build up the rings from capCenter in the direction of the 'direction' vector we computed earlier + + // as we iterate through the rings they must be placed higher above the center, the height we need is sin(angle(i)) + // as we iterate through the rings they must get smaller by the cos(angle(i)) + + // compute the four vertices + float ringSin1 = sinf(baseSliceAngle*(j + 0))*cosf(baseRingAngle*( i + 0 )); + float ringCos1 = cosf(baseSliceAngle*(j + 0))*cosf(baseRingAngle*( i + 0 )); + Vector3 w1 = (Vector3){ + capCenter.x + (sinf(baseRingAngle*( i + 0 ))*b0.x + ringSin1*b1.x + ringCos1*b2.x)*radius, + capCenter.y + (sinf(baseRingAngle*( i + 0 ))*b0.y + ringSin1*b1.y + ringCos1*b2.y)*radius, + capCenter.z + (sinf(baseRingAngle*( i + 0 ))*b0.z + ringSin1*b1.z + ringCos1*b2.z)*radius + }; + float ringSin2 = sinf(baseSliceAngle*(j + 1))*cosf(baseRingAngle*( i + 0 )); + float ringCos2 = cosf(baseSliceAngle*(j + 1))*cosf(baseRingAngle*( i + 0 )); + Vector3 w2 = (Vector3){ + capCenter.x + (sinf(baseRingAngle*( i + 0 ))*b0.x + ringSin2*b1.x + ringCos2*b2.x)*radius, + capCenter.y + (sinf(baseRingAngle*( i + 0 ))*b0.y + ringSin2*b1.y + ringCos2*b2.y)*radius, + capCenter.z + (sinf(baseRingAngle*( i + 0 ))*b0.z + ringSin2*b1.z + ringCos2*b2.z)*radius + }; + + float ringSin3 = sinf(baseSliceAngle*(j + 0))*cosf(baseRingAngle*( i + 1 )); + float ringCos3 = cosf(baseSliceAngle*(j + 0))*cosf(baseRingAngle*( i + 1 )); + Vector3 w3 = (Vector3){ + capCenter.x + (sinf(baseRingAngle*( i + 1 ))*b0.x + ringSin3*b1.x + ringCos3*b2.x)*radius, + capCenter.y + (sinf(baseRingAngle*( i + 1 ))*b0.y + ringSin3*b1.y + ringCos3*b2.y)*radius, + capCenter.z + (sinf(baseRingAngle*( i + 1 ))*b0.z + ringSin3*b1.z + ringCos3*b2.z)*radius + }; + float ringSin4 = sinf(baseSliceAngle*(j + 1))*cosf(baseRingAngle*( i + 1 )); + float ringCos4 = cosf(baseSliceAngle*(j + 1))*cosf(baseRingAngle*( i + 1 )); + Vector3 w4 = (Vector3){ + capCenter.x + (sinf(baseRingAngle*( i + 1 ))*b0.x + ringSin4*b1.x + ringCos4*b2.x)*radius, + capCenter.y + (sinf(baseRingAngle*( i + 1 ))*b0.y + ringSin4*b1.y + ringCos4*b2.y)*radius, + capCenter.z + (sinf(baseRingAngle*( i + 1 ))*b0.z + ringSin4*b1.z + ringCos4*b2.z)*radius + }; + + // Make sure cap triangle normals are facing outwards + if (c == 0) + { + rlVertex3f(w1.x, w1.y, w1.z); + rlVertex3f(w2.x, w2.y, w2.z); + rlVertex3f(w3.x, w3.y, w3.z); + + rlVertex3f(w2.x, w2.y, w2.z); + rlVertex3f(w4.x, w4.y, w4.z); + rlVertex3f(w3.x, w3.y, w3.z); + } + else + { + rlVertex3f(w1.x, w1.y, w1.z); + rlVertex3f(w3.x, w3.y, w3.z); + rlVertex3f(w2.x, w2.y, w2.z); + + rlVertex3f(w2.x, w2.y, w2.z); + rlVertex3f(w3.x, w3.y, w3.z); + rlVertex3f(w4.x, w4.y, w4.z); + } + } + } + capCenter = startPos; + b0 = Vector3Scale(b0, -1.0f); + } + // render middle + if (!sphereCase) + { + for (int j = 0; j < slices; j++) + { + // compute the four vertices + float ringSin1 = sinf(baseSliceAngle*(j + 0))*radius; + float ringCos1 = cosf(baseSliceAngle*(j + 0))*radius; + Vector3 w1 = { + startPos.x + ringSin1*b1.x + ringCos1*b2.x, + startPos.y + ringSin1*b1.y + ringCos1*b2.y, + startPos.z + ringSin1*b1.z + ringCos1*b2.z + }; + float ringSin2 = sinf(baseSliceAngle*(j + 1))*radius; + float ringCos2 = cosf(baseSliceAngle*(j + 1))*radius; + Vector3 w2 = { + startPos.x + ringSin2*b1.x + ringCos2*b2.x, + startPos.y + ringSin2*b1.y + ringCos2*b2.y, + startPos.z + ringSin2*b1.z + ringCos2*b2.z + }; + + float ringSin3 = sinf(baseSliceAngle*(j + 0))*radius; + float ringCos3 = cosf(baseSliceAngle*(j + 0))*radius; + Vector3 w3 = { + endPos.x + ringSin3*b1.x + ringCos3*b2.x, + endPos.y + ringSin3*b1.y + ringCos3*b2.y, + endPos.z + ringSin3*b1.z + ringCos3*b2.z + }; + float ringSin4 = sinf(baseSliceAngle*(j + 1))*radius; + float ringCos4 = cosf(baseSliceAngle*(j + 1))*radius; + Vector3 w4 = { + endPos.x + ringSin4*b1.x + ringCos4*b2.x, + endPos.y + ringSin4*b1.y + ringCos4*b2.y, + endPos.z + ringSin4*b1.z + ringCos4*b2.z + }; + // w2 x.-----------x startPos + rlVertex3f(w1.x, w1.y, w1.z); // | |\'. T0 / + rlVertex3f(w2.x, w2.y, w2.z); // T1 | \ '. / + rlVertex3f(w3.x, w3.y, w3.z); // | |T \ '. / + // | 2 \ T 'x w1 + rlVertex3f(w2.x, w2.y, w2.z); // | w4 x.---\-1-|---x endPos + rlVertex3f(w4.x, w4.y, w4.z); // T2 '. \ |T3/ + rlVertex3f(w3.x, w3.y, w3.z); // | '. \ | / + // '.\|/ + // 'x w3 + } + } + rlEnd(); +} + +// Draw capsule wires with the center of its sphere caps at startPos and endPos +void DrawCapsuleWires(Vector3 startPos, Vector3 endPos, float radius, int slices, int rings, Color color) +{ + if (slices < 3) slices = 3; + + Vector3 direction = { endPos.x - startPos.x, endPos.y - startPos.y, endPos.z - startPos.z }; + + // draw a sphere if start and end points are the same + bool sphereCase = (direction.x == 0) && (direction.y == 0) && (direction.z == 0); + if (sphereCase) direction = (Vector3){0.0f, 1.0f, 0.0f}; + + // Construct a basis of the base and the caps: + Vector3 b0 = Vector3Normalize(direction); + Vector3 b1 = Vector3Normalize(Vector3Perpendicular(direction)); + Vector3 b2 = Vector3Normalize(Vector3CrossProduct(b1, direction)); + Vector3 capCenter = endPos; + + float baseSliceAngle = (2.0f*PI)/slices; + float baseRingAngle = PI*0.5f/rings; + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + + // render both caps + for (int c = 0; c < 2; c++) + { + for (int i = 0; i < rings; i++) + { + for (int j = 0; j < slices; j++) + { + + // we build up the rings from capCenter in the direction of the 'direction' vector we computed earlier + + // as we iterate through the rings they must be placed higher above the center, the height we need is sin(angle(i)) + // as we iterate through the rings they must get smaller by the cos(angle(i)) + + // compute the four vertices + float ringSin1 = sinf(baseSliceAngle*(j + 0))*cosf(baseRingAngle*( i + 0 )); + float ringCos1 = cosf(baseSliceAngle*(j + 0))*cosf(baseRingAngle*( i + 0 )); + Vector3 w1 = (Vector3){ + capCenter.x + (sinf(baseRingAngle*( i + 0 ))*b0.x + ringSin1*b1.x + ringCos1*b2.x)*radius, + capCenter.y + (sinf(baseRingAngle*( i + 0 ))*b0.y + ringSin1*b1.y + ringCos1*b2.y)*radius, + capCenter.z + (sinf(baseRingAngle*( i + 0 ))*b0.z + ringSin1*b1.z + ringCos1*b2.z)*radius + }; + float ringSin2 = sinf(baseSliceAngle*(j + 1))*cosf(baseRingAngle*( i + 0 )); + float ringCos2 = cosf(baseSliceAngle*(j + 1))*cosf(baseRingAngle*( i + 0 )); + Vector3 w2 = (Vector3){ + capCenter.x + (sinf(baseRingAngle*( i + 0 ))*b0.x + ringSin2*b1.x + ringCos2*b2.x)*radius, + capCenter.y + (sinf(baseRingAngle*( i + 0 ))*b0.y + ringSin2*b1.y + ringCos2*b2.y)*radius, + capCenter.z + (sinf(baseRingAngle*( i + 0 ))*b0.z + ringSin2*b1.z + ringCos2*b2.z)*radius + }; + + float ringSin3 = sinf(baseSliceAngle*(j + 0))*cosf(baseRingAngle*( i + 1 )); + float ringCos3 = cosf(baseSliceAngle*(j + 0))*cosf(baseRingAngle*( i + 1 )); + Vector3 w3 = (Vector3){ + capCenter.x + (sinf(baseRingAngle*( i + 1 ))*b0.x + ringSin3*b1.x + ringCos3*b2.x)*radius, + capCenter.y + (sinf(baseRingAngle*( i + 1 ))*b0.y + ringSin3*b1.y + ringCos3*b2.y)*radius, + capCenter.z + (sinf(baseRingAngle*( i + 1 ))*b0.z + ringSin3*b1.z + ringCos3*b2.z)*radius + }; + float ringSin4 = sinf(baseSliceAngle*(j + 1))*cosf(baseRingAngle*( i + 1 )); + float ringCos4 = cosf(baseSliceAngle*(j + 1))*cosf(baseRingAngle*( i + 1 )); + Vector3 w4 = (Vector3){ + capCenter.x + (sinf(baseRingAngle*( i + 1 ))*b0.x + ringSin4*b1.x + ringCos4*b2.x)*radius, + capCenter.y + (sinf(baseRingAngle*( i + 1 ))*b0.y + ringSin4*b1.y + ringCos4*b2.y)*radius, + capCenter.z + (sinf(baseRingAngle*( i + 1 ))*b0.z + ringSin4*b1.z + ringCos4*b2.z)*radius + }; + + rlVertex3f(w1.x, w1.y, w1.z); + rlVertex3f(w2.x, w2.y, w2.z); + + rlVertex3f(w2.x, w2.y, w2.z); + rlVertex3f(w3.x, w3.y, w3.z); + + rlVertex3f(w1.x, w1.y, w1.z); + rlVertex3f(w3.x, w3.y, w3.z); + + rlVertex3f(w2.x, w2.y, w2.z); + rlVertex3f(w4.x, w4.y, w4.z); + + rlVertex3f(w3.x, w3.y, w3.z); + rlVertex3f(w4.x, w4.y, w4.z); + } + } + capCenter = startPos; + b0 = Vector3Scale(b0, -1.0f); + } + // render middle + if (!sphereCase) + { + for (int j = 0; j < slices; j++) + { + // compute the four vertices + float ringSin1 = sinf(baseSliceAngle*(j + 0))*radius; + float ringCos1 = cosf(baseSliceAngle*(j + 0))*radius; + Vector3 w1 = { + startPos.x + ringSin1*b1.x + ringCos1*b2.x, + startPos.y + ringSin1*b1.y + ringCos1*b2.y, + startPos.z + ringSin1*b1.z + ringCos1*b2.z + }; + float ringSin2 = sinf(baseSliceAngle*(j + 1))*radius; + float ringCos2 = cosf(baseSliceAngle*(j + 1))*radius; + Vector3 w2 = { + startPos.x + ringSin2*b1.x + ringCos2*b2.x, + startPos.y + ringSin2*b1.y + ringCos2*b2.y, + startPos.z + ringSin2*b1.z + ringCos2*b2.z + }; + + float ringSin3 = sinf(baseSliceAngle*(j + 0))*radius; + float ringCos3 = cosf(baseSliceAngle*(j + 0))*radius; + Vector3 w3 = { + endPos.x + ringSin3*b1.x + ringCos3*b2.x, + endPos.y + ringSin3*b1.y + ringCos3*b2.y, + endPos.z + ringSin3*b1.z + ringCos3*b2.z + }; + float ringSin4 = sinf(baseSliceAngle*(j + 1))*radius; + float ringCos4 = cosf(baseSliceAngle*(j + 1))*radius; + Vector3 w4 = { + endPos.x + ringSin4*b1.x + ringCos4*b2.x, + endPos.y + ringSin4*b1.y + ringCos4*b2.y, + endPos.z + ringSin4*b1.z + ringCos4*b2.z + }; + + rlVertex3f(w1.x, w1.y, w1.z); + rlVertex3f(w3.x, w3.y, w3.z); + + rlVertex3f(w2.x, w2.y, w2.z); + rlVertex3f(w4.x, w4.y, w4.z); + + rlVertex3f(w2.x, w2.y, w2.z); + rlVertex3f(w3.x, w3.y, w3.z); + } + } + rlEnd(); +} + +// Draw a plane +void DrawPlane(Vector3 centerPos, Vector2 size, Color color) +{ + // NOTE: Plane is always created on XZ ground + rlPushMatrix(); + rlTranslatef(centerPos.x, centerPos.y, centerPos.z); + rlScalef(size.x, 1.0f, size.y); + + rlBegin(RL_QUADS); + rlColor4ub(color.r, color.g, color.b, color.a); + rlNormal3f(0.0f, 1.0f, 0.0f); + + rlVertex3f(-0.5f, 0.0f, -0.5f); + rlVertex3f(-0.5f, 0.0f, 0.5f); + rlVertex3f(0.5f, 0.0f, 0.5f); + rlVertex3f(0.5f, 0.0f, -0.5f); + rlEnd(); + rlPopMatrix(); +} + +// Draw a ray line +void DrawRay(Ray ray, Color color) +{ + float scale = 10000; + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + rlColor4ub(color.r, color.g, color.b, color.a); + + rlVertex3f(ray.position.x, ray.position.y, ray.position.z); + rlVertex3f(ray.position.x + ray.direction.x*scale, ray.position.y + ray.direction.y*scale, ray.position.z + ray.direction.z*scale); + rlEnd(); +} + +// Draw a grid centered at (0, 0, 0) +void DrawGrid(int slices, float spacing) +{ + int halfSlices = slices/2; + + rlBegin(RL_LINES); + for (int i = -halfSlices; i <= halfSlices; i++) + { + if (i == 0) + { + rlColor3f(0.5f, 0.5f, 0.5f); + } + else + { + rlColor3f(0.75f, 0.75f, 0.75f); + } + + rlVertex3f((float)i*spacing, 0.0f, (float)-halfSlices*spacing); + rlVertex3f((float)i*spacing, 0.0f, (float)halfSlices*spacing); + + rlVertex3f((float)-halfSlices*spacing, 0.0f, (float)i*spacing); + rlVertex3f((float)halfSlices*spacing, 0.0f, (float)i*spacing); + } + rlEnd(); +} + +// Load model from files (mesh and material) +Model LoadModel(const char *fileName) +{ + Model model = { 0 }; + +#if defined(SUPPORT_FILEFORMAT_OBJ) + if (IsFileExtension(fileName, ".obj")) model = LoadOBJ(fileName); +#endif +#if defined(SUPPORT_FILEFORMAT_IQM) + if (IsFileExtension(fileName, ".iqm")) model = LoadIQM(fileName); +#endif +#if defined(SUPPORT_FILEFORMAT_GLTF) + if (IsFileExtension(fileName, ".gltf") || IsFileExtension(fileName, ".glb")) model = LoadGLTF(fileName); +#endif +#if defined(SUPPORT_FILEFORMAT_VOX) + if (IsFileExtension(fileName, ".vox")) model = LoadVOX(fileName); +#endif +#if defined(SUPPORT_FILEFORMAT_M3D) + if (IsFileExtension(fileName, ".m3d")) model = LoadM3D(fileName); +#endif + + // Make sure model transform is set to identity matrix! + model.transform = MatrixIdentity(); + + if ((model.meshCount != 0) && (model.meshes != NULL)) + { + // Upload vertex data to GPU (static meshes) + for (int i = 0; i < model.meshCount; i++) UploadMesh(&model.meshes[i], false); + } + else TRACELOG(LOG_WARNING, "MESH: [%s] Failed to load model mesh(es) data", fileName); + + if (model.materialCount == 0) + { + TRACELOG(LOG_WARNING, "MATERIAL: [%s] Failed to load model material data, default to white material", fileName); + + model.materialCount = 1; + model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material)); + model.materials[0] = LoadMaterialDefault(); + + if (model.meshMaterial == NULL) model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + } + + return model; +} + +// Load model from generated mesh +// WARNING: A shallow copy of mesh is generated, passed by value, +// as long as struct contains pointers to data and some values, we get a copy +// of mesh pointing to same data as original version... be careful! +Model LoadModelFromMesh(Mesh mesh) +{ + Model model = { 0 }; + + model.transform = MatrixIdentity(); + + model.meshCount = 1; + model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh)); + model.meshes[0] = mesh; + + model.materialCount = 1; + model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material)); + model.materials[0] = LoadMaterialDefault(); + + model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + model.meshMaterial[0] = 0; // First material index + + return model; +} + +// Check if a model is valid (loaded in GPU, VAO/VBOs) +bool IsModelValid(Model model) +{ + bool result = false; + + if ((model.meshes != NULL) && // Validate model contains some mesh + (model.materials != NULL) && // Validate model contains some material (at least default one) + (model.meshMaterial != NULL) && // Validate mesh-material linkage + (model.meshCount > 0) && // Validate mesh count + (model.materialCount > 0)) result = true; // Validate material count + + // NOTE: Many elements could be validated from a model, including every model mesh VAO/VBOs + // but some VBOs could not be used, it depends on Mesh vertex data + for (int i = 0; i < model.meshCount; i++) + { + if ((model.meshes[i].vertices != NULL) && (model.meshes[i].vboId[0] == 0)) { result = false; break; } // Vertex position buffer not uploaded to GPU + if ((model.meshes[i].texcoords != NULL) && (model.meshes[i].vboId[1] == 0)) { result = false; break; } // Vertex textcoords buffer not uploaded to GPU + if ((model.meshes[i].normals != NULL) && (model.meshes[i].vboId[2] == 0)) { result = false; break; } // Vertex normals buffer not uploaded to GPU + if ((model.meshes[i].colors != NULL) && (model.meshes[i].vboId[3] == 0)) { result = false; break; } // Vertex colors buffer not uploaded to GPU + if ((model.meshes[i].tangents != NULL) && (model.meshes[i].vboId[4] == 0)) { result = false; break; } // Vertex tangents buffer not uploaded to GPU + if ((model.meshes[i].texcoords2 != NULL) && (model.meshes[i].vboId[5] == 0)) { result = false; break; } // Vertex texcoords2 buffer not uploaded to GPU + if ((model.meshes[i].indices != NULL) && (model.meshes[i].vboId[6] == 0)) { result = false; break; } // Vertex indices buffer not uploaded to GPU + if ((model.meshes[i].boneIds != NULL) && (model.meshes[i].vboId[7] == 0)) { result = false; break; } // Vertex boneIds buffer not uploaded to GPU + if ((model.meshes[i].boneWeights != NULL) && (model.meshes[i].vboId[8] == 0)) { result = false; break; } // Vertex boneWeights buffer not uploaded to GPU + + // NOTE: Some OpenGL versions do not support VAO, so we don't check it + //if (model.meshes[i].vaoId == 0) { result = false; break } + } + + return result; +} + +// Unload model (meshes/materials) from memory (RAM and/or VRAM) +// NOTE: This function takes care of all model elements, for a detailed control +// over them, use UnloadMesh() and UnloadMaterial() +void UnloadModel(Model model) +{ + // Unload meshes + for (int i = 0; i < model.meshCount; i++) UnloadMesh(model.meshes[i]); + + // Unload materials maps + // NOTE: As the user could be sharing shaders and textures between models, + // we don't unload the material but just free its maps, + // the user is responsible for freeing models shaders and textures + for (int i = 0; i < model.materialCount; i++) RL_FREE(model.materials[i].maps); + + // Unload arrays + RL_FREE(model.meshes); + RL_FREE(model.materials); + RL_FREE(model.meshMaterial); + + // Unload animation data + RL_FREE(model.bones); + RL_FREE(model.bindPose); + + TRACELOG(LOG_INFO, "MODEL: Unloaded model (and meshes) from RAM and VRAM"); +} + +// Compute model bounding box limits (considers all meshes) +BoundingBox GetModelBoundingBox(Model model) +{ + BoundingBox bounds = { 0 }; + + if (model.meshCount > 0) + { + Vector3 temp = { 0 }; + bounds = GetMeshBoundingBox(model.meshes[0]); + + for (int i = 1; i < model.meshCount; i++) + { + BoundingBox tempBounds = GetMeshBoundingBox(model.meshes[i]); + + temp.x = (bounds.min.x < tempBounds.min.x)? bounds.min.x : tempBounds.min.x; + temp.y = (bounds.min.y < tempBounds.min.y)? bounds.min.y : tempBounds.min.y; + temp.z = (bounds.min.z < tempBounds.min.z)? bounds.min.z : tempBounds.min.z; + bounds.min = temp; + + temp.x = (bounds.max.x > tempBounds.max.x)? bounds.max.x : tempBounds.max.x; + temp.y = (bounds.max.y > tempBounds.max.y)? bounds.max.y : tempBounds.max.y; + temp.z = (bounds.max.z > tempBounds.max.z)? bounds.max.z : tempBounds.max.z; + bounds.max = temp; + } + } + + // Apply model.transform to bounding box + // WARNING: Current BoundingBox structure design does not support rotation transformations, + // in those cases is up to the user to calculate the proper box bounds (8 vertices transformed) + bounds.min = Vector3Transform(bounds.min, model.transform); + bounds.max = Vector3Transform(bounds.max, model.transform); + + return bounds; +} + +// Upload vertex data into a VAO (if supported) and VBO +void UploadMesh(Mesh *mesh, bool dynamic) +{ + if (mesh->vaoId > 0) + { + // Check if mesh has already been loaded in GPU + TRACELOG(LOG_WARNING, "VAO: [ID %i] Trying to re-load an already loaded mesh", mesh->vaoId); + return; + } + + mesh->vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VERTEX_BUFFERS, sizeof(unsigned int)); + + mesh->vaoId = 0; // Vertex Array Object + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION] = 0; // Vertex buffer: positions + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD] = 0; // Vertex buffer: texcoords + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL] = 0; // Vertex buffer: normals + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR] = 0; // Vertex buffer: colors + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT] = 0; // Vertex buffer: tangents + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2] = 0; // Vertex buffer: texcoords2 + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES] = 0; // Vertex buffer: indices + +#ifdef RL_SUPPORT_MESH_GPU_SKINNING + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS] = 0; // Vertex buffer: boneIds + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS] = 0; // Vertex buffer: boneWeights +#endif + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + mesh->vaoId = rlLoadVertexArray(); + rlEnableVertexArray(mesh->vaoId); + + // NOTE: Vertex attributes must be uploaded considering default locations points and available vertex data + + // Enable vertex attributes: position (shader-location = 0) + void *vertices = (mesh->animVertices != NULL)? mesh->animVertices : mesh->vertices; + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION] = rlLoadVertexBuffer(vertices, mesh->vertexCount*3*sizeof(float), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION, 3, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION); + + // Enable vertex attributes: texcoords (shader-location = 1) + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD] = rlLoadVertexBuffer(mesh->texcoords, mesh->vertexCount*2*sizeof(float), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD, 2, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD); + + // WARNING: When setting default vertex attribute values, the values for each generic vertex attribute + // is part of current state, and it is maintained even if a different program object is used + + if (mesh->normals != NULL) + { + // Enable vertex attributes: normals (shader-location = 2) + void *normals = (mesh->animNormals != NULL)? mesh->animNormals : mesh->normals; + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL] = rlLoadVertexBuffer(normals, mesh->vertexCount*3*sizeof(float), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL, 3, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL); + } + else + { + // Default vertex attribute: normal + // WARNING: Default value provided to shader if location available + float value[3] = { 1.0f, 1.0f, 1.0f }; + rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL, value, SHADER_ATTRIB_VEC3, 3); + rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL); + } + + if (mesh->colors != NULL) + { + // Enable vertex attribute: color (shader-location = 3) + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR] = rlLoadVertexBuffer(mesh->colors, mesh->vertexCount*4*sizeof(unsigned char), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR, 4, RL_UNSIGNED_BYTE, 1, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR); + } + else + { + // Default vertex attribute: color + // WARNING: Default value provided to shader if location available + float value[4] = { 1.0f, 1.0f, 1.0f, 1.0f }; // WHITE + rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR, value, SHADER_ATTRIB_VEC4, 4); + rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR); + } + + if (mesh->tangents != NULL) + { + // Enable vertex attribute: tangent (shader-location = 4) + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT] = rlLoadVertexBuffer(mesh->tangents, mesh->vertexCount*4*sizeof(float), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT, 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT); + } + else + { + // Default vertex attribute: tangent + // WARNING: Default value provided to shader if location available + float value[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; + rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT, value, SHADER_ATTRIB_VEC4, 4); + rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT); + } + + if (mesh->texcoords2 != NULL) + { + // Enable vertex attribute: texcoord2 (shader-location = 5) + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2] = rlLoadVertexBuffer(mesh->texcoords2, mesh->vertexCount*2*sizeof(float), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2, 2, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2); + } + else + { + // Default vertex attribute: texcoord2 + // WARNING: Default value provided to shader if location available + float value[2] = { 0.0f, 0.0f }; + rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2, value, SHADER_ATTRIB_VEC2, 2); + rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2); + } + +#ifdef RL_SUPPORT_MESH_GPU_SKINNING + if (mesh->boneIds != NULL) + { + // Enable vertex attribute: boneIds (shader-location = 7) + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS] = rlLoadVertexBuffer(mesh->boneIds, mesh->vertexCount*4*sizeof(unsigned char), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS, 4, RL_UNSIGNED_BYTE, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS); + } + else + { + // Default vertex attribute: boneIds + // WARNING: Default value provided to shader if location available + float value[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; + rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS, value, SHADER_ATTRIB_VEC4, 4); + rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS); + } + + if (mesh->boneWeights != NULL) + { + // Enable vertex attribute: boneWeights (shader-location = 8) + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS] = rlLoadVertexBuffer(mesh->boneWeights, mesh->vertexCount*4*sizeof(float), dynamic); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS, 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS); + } + else + { + // Default vertex attribute: boneWeights + // WARNING: Default value provided to shader if location available + float value[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; + rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS, value, SHADER_ATTRIB_VEC4, 2); + rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS); + } +#endif + + if (mesh->indices != NULL) + { + mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES] = rlLoadVertexBufferElement(mesh->indices, mesh->triangleCount*3*sizeof(unsigned short), dynamic); + } + + if (mesh->vaoId > 0) TRACELOG(LOG_INFO, "VAO: [ID %i] Mesh uploaded successfully to VRAM (GPU)", mesh->vaoId); + else TRACELOG(LOG_INFO, "VBO: Mesh uploaded successfully to VRAM (GPU)"); + + rlDisableVertexArray(); +#endif +} + +// Update mesh vertex data in GPU for a specific buffer index +void UpdateMeshBuffer(Mesh mesh, int index, const void *data, int dataSize, int offset) +{ + rlUpdateVertexBuffer(mesh.vboId[index], data, dataSize, offset); +} + +// Draw a 3d mesh with material and transform +void DrawMesh(Mesh mesh, Material material, Matrix transform) +{ +#if defined(GRAPHICS_API_OPENGL_11) + #define GL_VERTEX_ARRAY 0x8074 + #define GL_NORMAL_ARRAY 0x8075 + #define GL_COLOR_ARRAY 0x8076 + #define GL_TEXTURE_COORD_ARRAY 0x8078 + + rlEnableTexture(material.maps[MATERIAL_MAP_DIFFUSE].texture.id); + + rlEnableStatePointer(GL_VERTEX_ARRAY, mesh.vertices); + rlEnableStatePointer(GL_TEXTURE_COORD_ARRAY, mesh.texcoords); + rlEnableStatePointer(GL_NORMAL_ARRAY, mesh.normals); + rlEnableStatePointer(GL_COLOR_ARRAY, mesh.colors); + + rlPushMatrix(); + rlMultMatrixf(MatrixToFloat(transform)); + rlColor4ub(material.maps[MATERIAL_MAP_DIFFUSE].color.r, + material.maps[MATERIAL_MAP_DIFFUSE].color.g, + material.maps[MATERIAL_MAP_DIFFUSE].color.b, + material.maps[MATERIAL_MAP_DIFFUSE].color.a); + + if (mesh.indices != NULL) rlDrawVertexArrayElements(0, mesh.triangleCount*3, mesh.indices); + else rlDrawVertexArray(0, mesh.vertexCount); + rlPopMatrix(); + + rlDisableStatePointer(GL_VERTEX_ARRAY); + rlDisableStatePointer(GL_TEXTURE_COORD_ARRAY); + rlDisableStatePointer(GL_NORMAL_ARRAY); + rlDisableStatePointer(GL_COLOR_ARRAY); + + rlDisableTexture(); +#endif + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + // Bind shader program + rlEnableShader(material.shader.id); + + // Send required data to shader (matrices, values) + //----------------------------------------------------- + // Upload to shader material.colDiffuse + if (material.shader.locs[SHADER_LOC_COLOR_DIFFUSE] != -1) + { + float values[4] = { + (float)material.maps[MATERIAL_MAP_DIFFUSE].color.r/255.0f, + (float)material.maps[MATERIAL_MAP_DIFFUSE].color.g/255.0f, + (float)material.maps[MATERIAL_MAP_DIFFUSE].color.b/255.0f, + (float)material.maps[MATERIAL_MAP_DIFFUSE].color.a/255.0f + }; + + rlSetUniform(material.shader.locs[SHADER_LOC_COLOR_DIFFUSE], values, SHADER_UNIFORM_VEC4, 1); + } + + // Upload to shader material.colSpecular (if location available) + if (material.shader.locs[SHADER_LOC_COLOR_SPECULAR] != -1) + { + float values[4] = { + (float)material.maps[MATERIAL_MAP_SPECULAR].color.r/255.0f, + (float)material.maps[MATERIAL_MAP_SPECULAR].color.g/255.0f, + (float)material.maps[MATERIAL_MAP_SPECULAR].color.b/255.0f, + (float)material.maps[MATERIAL_MAP_SPECULAR].color.a/255.0f + }; + + rlSetUniform(material.shader.locs[SHADER_LOC_COLOR_SPECULAR], values, SHADER_UNIFORM_VEC4, 1); + } + + // Get a copy of current matrices to work with, + // just in case stereo render is required, and we need to modify them + // NOTE: At this point the modelview matrix just contains the view matrix (camera) + // That's because BeginMode3D() sets it and there is no model-drawing function + // that modifies it, all use rlPushMatrix() and rlPopMatrix() + Matrix matModel = MatrixIdentity(); + Matrix matView = rlGetMatrixModelview(); + Matrix matModelView = MatrixIdentity(); + Matrix matProjection = rlGetMatrixProjection(); + + // Upload view and projection matrices (if locations available) + if (material.shader.locs[SHADER_LOC_MATRIX_VIEW] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_VIEW], matView); + if (material.shader.locs[SHADER_LOC_MATRIX_PROJECTION] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_PROJECTION], matProjection); + + // Accumulate several model transformations: + // transform: model transformation provided (includes DrawModel() params combined with model.transform) + // rlGetMatrixTransform(): rlgl internal transform matrix due to push/pop matrix stack + matModel = MatrixMultiply(transform, rlGetMatrixTransform()); + + // Model transformation matrix is sent to shader uniform location: SHADER_LOC_MATRIX_MODEL + if (material.shader.locs[SHADER_LOC_MATRIX_MODEL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_MODEL], matModel); + + // Get model-view matrix + matModelView = MatrixMultiply(matModel, matView); + + // Upload model normal matrix (if locations available) + if (material.shader.locs[SHADER_LOC_MATRIX_NORMAL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_NORMAL], MatrixTranspose(MatrixInvert(matModel))); + +#ifdef RL_SUPPORT_MESH_GPU_SKINNING + // Upload Bone Transforms + if ((material.shader.locs[SHADER_LOC_BONE_MATRICES] != -1) && mesh.boneMatrices) + { + rlSetUniformMatrices(material.shader.locs[SHADER_LOC_BONE_MATRICES], mesh.boneMatrices, mesh.boneCount); + } +#endif + //----------------------------------------------------- + + // Bind active texture maps (if available) + for (int i = 0; i < MAX_MATERIAL_MAPS; i++) + { + if (material.maps[i].texture.id > 0) + { + // Select current shader texture slot + rlActiveTextureSlot(i); + + // Enable texture for active slot + if ((i == MATERIAL_MAP_IRRADIANCE) || + (i == MATERIAL_MAP_PREFILTER) || + (i == MATERIAL_MAP_CUBEMAP)) rlEnableTextureCubemap(material.maps[i].texture.id); + else rlEnableTexture(material.maps[i].texture.id); + + rlSetUniform(material.shader.locs[SHADER_LOC_MAP_DIFFUSE + i], &i, SHADER_UNIFORM_INT, 1); + } + } + + // Try binding vertex array objects (VAO) or use VBOs if not possible + // WARNING: UploadMesh() enables all vertex attributes available in mesh and sets default attribute values + // for shader expected vertex attributes that are not provided by the mesh (i.e. colors) + // This could be a dangerous approach because different meshes with different shaders can enable/disable some attributes + if (!rlEnableVertexArray(mesh.vaoId)) + { + // Bind mesh VBO data: vertex position (shader-location = 0) + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_POSITION], 3, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_POSITION]); + + // Bind mesh VBO data: vertex texcoords (shader-location = 1) + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD01], 2, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD01]); + + if (material.shader.locs[SHADER_LOC_VERTEX_NORMAL] != -1) + { + // Bind mesh VBO data: vertex normals (shader-location = 2) + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_NORMAL], 3, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_NORMAL]); + } + + // Bind mesh VBO data: vertex colors (shader-location = 3, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_COLOR] != -1) + { + if (mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR] != 0) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR], 4, RL_UNSIGNED_BYTE, 1, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR]); + } + else + { + // Set default value for defined vertex attribute in shader but not provided by mesh + // WARNING: It could result in GPU undefined behaviour + float value[4] = { 1.0f, 1.0f, 1.0f, 1.0f }; + rlSetVertexAttributeDefault(material.shader.locs[SHADER_LOC_VERTEX_COLOR], value, SHADER_ATTRIB_VEC4, 4); + rlDisableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR]); + } + } + + // Bind mesh VBO data: vertex tangents (shader-location = 4, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_TANGENT] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TANGENT], 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TANGENT]); + } + + // Bind mesh VBO data: vertex texcoords2 (shader-location = 5, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02], 2, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02]); + } + +#ifdef RL_SUPPORT_MESH_GPU_SKINNING + // Bind mesh VBO data: vertex bone ids (shader-location = 6, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_BONEIDS] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEIDS], 4, RL_UNSIGNED_BYTE, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEIDS]); + } + + // Bind mesh VBO data: vertex bone weights (shader-location = 7, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS], 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS]); + } +#endif + + if (mesh.indices != NULL) rlEnableVertexBufferElement(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES]); + } + + int eyeCount = 1; + if (rlIsStereoRenderEnabled()) eyeCount = 2; + + for (int eye = 0; eye < eyeCount; eye++) + { + // Calculate model-view-projection matrix (MVP) + Matrix matModelViewProjection = MatrixIdentity(); + if (eyeCount == 1) matModelViewProjection = MatrixMultiply(matModelView, matProjection); + else + { + // Setup current eye viewport (half screen width) + rlViewport(eye*rlGetFramebufferWidth()/2, 0, rlGetFramebufferWidth()/2, rlGetFramebufferHeight()); + matModelViewProjection = MatrixMultiply(MatrixMultiply(matModelView, rlGetMatrixViewOffsetStereo(eye)), rlGetMatrixProjectionStereo(eye)); + } + + // Send combined model-view-projection matrix to shader + rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_MVP], matModelViewProjection); + + // Draw mesh + if (mesh.indices != NULL) rlDrawVertexArrayElements(0, mesh.triangleCount*3, 0); + else rlDrawVertexArray(0, mesh.vertexCount); + } + + // Unbind all bound texture maps + for (int i = 0; i < MAX_MATERIAL_MAPS; i++) + { + if (material.maps[i].texture.id > 0) + { + // Select current shader texture slot + rlActiveTextureSlot(i); + + // Disable texture for active slot + if ((i == MATERIAL_MAP_IRRADIANCE) || + (i == MATERIAL_MAP_PREFILTER) || + (i == MATERIAL_MAP_CUBEMAP)) rlDisableTextureCubemap(); + else rlDisableTexture(); + } + } + + // Disable all possible vertex array objects (or VBOs) + rlDisableVertexArray(); + rlDisableVertexBuffer(); + rlDisableVertexBufferElement(); + + // Disable shader program + rlDisableShader(); + + // Restore rlgl internal modelview and projection matrices + rlSetMatrixModelview(matView); + rlSetMatrixProjection(matProjection); +#endif +} + +// Draw multiple mesh instances with material and different transforms +void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, int instances) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + // Instancing required variables + float16 *instanceTransforms = NULL; + unsigned int instancesVboId = 0; + + // Bind shader program + rlEnableShader(material.shader.id); + + // Send required data to shader (matrices, values) + //----------------------------------------------------- + // Upload to shader material.colDiffuse + if (material.shader.locs[SHADER_LOC_COLOR_DIFFUSE] != -1) + { + float values[4] = { + (float)material.maps[MATERIAL_MAP_DIFFUSE].color.r/255.0f, + (float)material.maps[MATERIAL_MAP_DIFFUSE].color.g/255.0f, + (float)material.maps[MATERIAL_MAP_DIFFUSE].color.b/255.0f, + (float)material.maps[MATERIAL_MAP_DIFFUSE].color.a/255.0f + }; + + rlSetUniform(material.shader.locs[SHADER_LOC_COLOR_DIFFUSE], values, SHADER_UNIFORM_VEC4, 1); + } + + // Upload to shader material.colSpecular (if location available) + if (material.shader.locs[SHADER_LOC_COLOR_SPECULAR] != -1) + { + float values[4] = { + (float)material.maps[SHADER_LOC_COLOR_SPECULAR].color.r/255.0f, + (float)material.maps[SHADER_LOC_COLOR_SPECULAR].color.g/255.0f, + (float)material.maps[SHADER_LOC_COLOR_SPECULAR].color.b/255.0f, + (float)material.maps[SHADER_LOC_COLOR_SPECULAR].color.a/255.0f + }; + + rlSetUniform(material.shader.locs[SHADER_LOC_COLOR_SPECULAR], values, SHADER_UNIFORM_VEC4, 1); + } + + // Get a copy of current matrices to work with, + // just in case stereo render is required, and we need to modify them + // NOTE: At this point the modelview matrix just contains the view matrix (camera) + // That's because BeginMode3D() sets it and there is no model-drawing function + // that modifies it, all use rlPushMatrix() and rlPopMatrix() + Matrix matModel = MatrixIdentity(); + Matrix matView = rlGetMatrixModelview(); + Matrix matModelView = MatrixIdentity(); + Matrix matProjection = rlGetMatrixProjection(); + + // Upload view and projection matrices (if locations available) + if (material.shader.locs[SHADER_LOC_MATRIX_VIEW] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_VIEW], matView); + if (material.shader.locs[SHADER_LOC_MATRIX_PROJECTION] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_PROJECTION], matProjection); + + // Create instances buffer + instanceTransforms = (float16 *)RL_MALLOC(instances*sizeof(float16)); + + // Fill buffer with instances transformations as float16 arrays + for (int i = 0; i < instances; i++) instanceTransforms[i] = MatrixToFloatV(transforms[i]); + + // Enable mesh VAO to attach new buffer + rlEnableVertexArray(mesh.vaoId); + + // This could alternatively use a static VBO and either glMapBuffer() or glBufferSubData() + // It isn't clear which would be reliably faster in all cases and on all platforms, + // anecdotally glMapBuffer() seems very slow (syncs) while glBufferSubData() seems + // no faster, since we're transferring all the transform matrices anyway + instancesVboId = rlLoadVertexBuffer(instanceTransforms, instances*sizeof(float16), false); + + // Instances transformation matrices are send to shader attribute location: SHADER_LOC_MATRIX_MODEL + for (unsigned int i = 0; i < 4; i++) + { + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i, 4, RL_FLOAT, 0, sizeof(Matrix), i*sizeof(Vector4)); + rlSetVertexAttributeDivisor(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i, 1); + } + + rlDisableVertexBuffer(); + rlDisableVertexArray(); + + // Accumulate internal matrix transform (push/pop) and view matrix + // NOTE: In this case, model instance transformation must be computed in the shader + matModelView = MatrixMultiply(rlGetMatrixTransform(), matView); + + // Upload model normal matrix (if locations available) + if (material.shader.locs[SHADER_LOC_MATRIX_NORMAL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_NORMAL], MatrixTranspose(MatrixInvert(matModel))); + +#ifdef RL_SUPPORT_MESH_GPU_SKINNING + // Upload Bone Transforms + if ((material.shader.locs[SHADER_LOC_BONE_MATRICES] != -1) && mesh.boneMatrices) + { + rlSetUniformMatrices(material.shader.locs[SHADER_LOC_BONE_MATRICES], mesh.boneMatrices, mesh.boneCount); + } +#endif + + //----------------------------------------------------- + + // Bind active texture maps (if available) + for (int i = 0; i < MAX_MATERIAL_MAPS; i++) + { + if (material.maps[i].texture.id > 0) + { + // Select current shader texture slot + rlActiveTextureSlot(i); + + // Enable texture for active slot + if ((i == MATERIAL_MAP_IRRADIANCE) || + (i == MATERIAL_MAP_PREFILTER) || + (i == MATERIAL_MAP_CUBEMAP)) rlEnableTextureCubemap(material.maps[i].texture.id); + else rlEnableTexture(material.maps[i].texture.id); + + rlSetUniform(material.shader.locs[SHADER_LOC_MAP_DIFFUSE + i], &i, SHADER_UNIFORM_INT, 1); + } + } + + // Try binding vertex array objects (VAO) + // or use VBOs if not possible + if (!rlEnableVertexArray(mesh.vaoId)) + { + // Bind mesh VBO data: vertex position (shader-location = 0) + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_POSITION]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_POSITION], 3, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_POSITION]); + + // Bind mesh VBO data: vertex texcoords (shader-location = 1) + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD01], 2, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD01]); + + if (material.shader.locs[SHADER_LOC_VERTEX_NORMAL] != -1) + { + // Bind mesh VBO data: vertex normals (shader-location = 2) + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_NORMAL]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_NORMAL], 3, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_NORMAL]); + } + + // Bind mesh VBO data: vertex colors (shader-location = 3, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_COLOR] != -1) + { + if (mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR] != 0) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR], 4, RL_UNSIGNED_BYTE, 1, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR]); + } + else + { + // Set default value for unused attribute + // NOTE: Required when using default shader and no VAO support + float value[4] = { 1.0f, 1.0f, 1.0f, 1.0f }; + rlSetVertexAttributeDefault(material.shader.locs[SHADER_LOC_VERTEX_COLOR], value, SHADER_ATTRIB_VEC4, 4); + rlDisableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR]); + } + } + + // Bind mesh VBO data: vertex tangents (shader-location = 4, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_TANGENT] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TANGENT], 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TANGENT]); + } + + // Bind mesh VBO data: vertex texcoords2 (shader-location = 5, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02], 2, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02]); + } + +#ifdef RL_SUPPORT_MESH_GPU_SKINNING + // Bind mesh VBO data: vertex bone ids (shader-location = 6, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_BONEIDS] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEIDS], 4, RL_UNSIGNED_BYTE, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEIDS]); + } + + // Bind mesh VBO data: vertex bone weights (shader-location = 7, if available) + if (material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS] != -1) + { + rlEnableVertexBuffer(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS]); + rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS], 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS]); + } +#endif + + if (mesh.indices != NULL) rlEnableVertexBufferElement(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES]); + } + + int eyeCount = 1; + if (rlIsStereoRenderEnabled()) eyeCount = 2; + + for (int eye = 0; eye < eyeCount; eye++) + { + // Calculate model-view-projection matrix (MVP) + Matrix matModelViewProjection = MatrixIdentity(); + if (eyeCount == 1) matModelViewProjection = MatrixMultiply(matModelView, matProjection); + else + { + // Setup current eye viewport (half screen width) + rlViewport(eye*rlGetFramebufferWidth()/2, 0, rlGetFramebufferWidth()/2, rlGetFramebufferHeight()); + matModelViewProjection = MatrixMultiply(MatrixMultiply(matModelView, rlGetMatrixViewOffsetStereo(eye)), rlGetMatrixProjectionStereo(eye)); + } + + // Send combined model-view-projection matrix to shader + rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_MVP], matModelViewProjection); + + // Draw mesh instanced + if (mesh.indices != NULL) rlDrawVertexArrayElementsInstanced(0, mesh.triangleCount*3, 0, instances); + else rlDrawVertexArrayInstanced(0, mesh.vertexCount, instances); + } + + // Unbind all bound texture maps + for (int i = 0; i < MAX_MATERIAL_MAPS; i++) + { + if (material.maps[i].texture.id > 0) + { + // Select current shader texture slot + rlActiveTextureSlot(i); + + // Disable texture for active slot + if ((i == MATERIAL_MAP_IRRADIANCE) || + (i == MATERIAL_MAP_PREFILTER) || + (i == MATERIAL_MAP_CUBEMAP)) rlDisableTextureCubemap(); + else rlDisableTexture(); + } + } + + // Disable all possible vertex array objects (or VBOs) + rlDisableVertexArray(); + rlDisableVertexBuffer(); + rlDisableVertexBufferElement(); + + // Disable shader program + rlDisableShader(); + + // Remove instance transforms buffer + rlUnloadVertexBuffer(instancesVboId); + RL_FREE(instanceTransforms); +#endif +} + +// Unload mesh from memory (RAM and VRAM) +void UnloadMesh(Mesh mesh) +{ + // Unload rlgl mesh vboId data + rlUnloadVertexArray(mesh.vaoId); + + if (mesh.vboId != NULL) for (int i = 0; i < MAX_MESH_VERTEX_BUFFERS; i++) rlUnloadVertexBuffer(mesh.vboId[i]); + RL_FREE(mesh.vboId); + + RL_FREE(mesh.vertices); + RL_FREE(mesh.texcoords); + RL_FREE(mesh.normals); + RL_FREE(mesh.colors); + RL_FREE(mesh.tangents); + RL_FREE(mesh.texcoords2); + RL_FREE(mesh.indices); + + RL_FREE(mesh.animVertices); + RL_FREE(mesh.animNormals); + RL_FREE(mesh.boneWeights); + RL_FREE(mesh.boneIds); + RL_FREE(mesh.boneMatrices); +} + +// Export mesh data to file +bool ExportMesh(Mesh mesh, const char *fileName) +{ + bool success = false; + + if (IsFileExtension(fileName, ".obj")) + { + // Estimated data size, it should be enough... + int dataSize = mesh.vertexCount*(int)strlen("v 0000.00f 0000.00f 0000.00f") + + mesh.vertexCount*(int)strlen("vt 0.000f 0.00f") + + mesh.vertexCount*(int)strlen("vn 0.000f 0.00f 0.00f") + + mesh.triangleCount*(int)strlen("f 00000/00000/00000 00000/00000/00000 00000/00000/00000"); + + // NOTE: Text data buffer size is estimated considering mesh data size + char *txtData = (char *)RL_CALLOC(dataSize*2 + 2000, sizeof(char)); + + int byteCount = 0; + byteCount += sprintf(txtData + byteCount, "# //////////////////////////////////////////////////////////////////////////////////\n"); + byteCount += sprintf(txtData + byteCount, "# // //\n"); + byteCount += sprintf(txtData + byteCount, "# // rMeshOBJ exporter v1.0 - Mesh exported as triangle faces and not optimized //\n"); + byteCount += sprintf(txtData + byteCount, "# // //\n"); + byteCount += sprintf(txtData + byteCount, "# // more info and bugs-report: github.com/raysan5/raylib //\n"); + byteCount += sprintf(txtData + byteCount, "# // feedback and support: ray[at]raylib.com //\n"); + byteCount += sprintf(txtData + byteCount, "# // //\n"); + byteCount += sprintf(txtData + byteCount, "# // Copyright (c) 2018-2024 Ramon Santamaria (@raysan5) //\n"); + byteCount += sprintf(txtData + byteCount, "# // //\n"); + byteCount += sprintf(txtData + byteCount, "# //////////////////////////////////////////////////////////////////////////////////\n\n"); + byteCount += sprintf(txtData + byteCount, "# Vertex Count: %i\n", mesh.vertexCount); + byteCount += sprintf(txtData + byteCount, "# Triangle Count: %i\n\n", mesh.triangleCount); + + byteCount += sprintf(txtData + byteCount, "g mesh\n"); + + for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 3) + { + byteCount += sprintf(txtData + byteCount, "v %.2f %.2f %.2f\n", mesh.vertices[v], mesh.vertices[v + 1], mesh.vertices[v + 2]); + } + + for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 2) + { + byteCount += sprintf(txtData + byteCount, "vt %.3f %.3f\n", mesh.texcoords[v], mesh.texcoords[v + 1]); + } + + for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 3) + { + byteCount += sprintf(txtData + byteCount, "vn %.3f %.3f %.3f\n", mesh.normals[v], mesh.normals[v + 1], mesh.normals[v + 2]); + } + + if (mesh.indices != NULL) + { + for (int i = 0, v = 0; i < mesh.triangleCount; i++, v += 3) + { + byteCount += sprintf(txtData + byteCount, "f %i/%i/%i %i/%i/%i %i/%i/%i\n", + mesh.indices[v] + 1, mesh.indices[v] + 1, mesh.indices[v] + 1, + mesh.indices[v + 1] + 1, mesh.indices[v + 1] + 1, mesh.indices[v + 1] + 1, + mesh.indices[v + 2] + 1, mesh.indices[v + 2] + 1, mesh.indices[v + 2] + 1); + } + } + else + { + for (int i = 0, v = 1; i < mesh.triangleCount; i++, v += 3) + { + byteCount += sprintf(txtData + byteCount, "f %i/%i/%i %i/%i/%i %i/%i/%i\n", v, v, v, v + 1, v + 1, v + 1, v + 2, v + 2, v + 2); + } + } + + byteCount += sprintf(txtData + byteCount, "\n"); + + // NOTE: Text data length exported is determined by '\0' (NULL) character + success = SaveFileText(fileName, txtData); + + RL_FREE(txtData); + } + else if (IsFileExtension(fileName, ".raw")) + { + // TODO: Support additional file formats to export mesh vertex data + } + + return success; +} + +// Export mesh as code file (.h) defining multiple arrays of vertex attributes +bool ExportMeshAsCode(Mesh mesh, const char *fileName) +{ + bool success = false; + +#ifndef TEXT_BYTES_PER_LINE + #define TEXT_BYTES_PER_LINE 20 +#endif + + // NOTE: Text data buffer size is fixed to 64MB + char *txtData = (char *)RL_CALLOC(64*1024*1024, sizeof(char)); // 64 MB + + int byteCount = 0; + byteCount += sprintf(txtData + byteCount, "////////////////////////////////////////////////////////////////////////////////////////\n"); + byteCount += sprintf(txtData + byteCount, "// //\n"); + byteCount += sprintf(txtData + byteCount, "// MeshAsCode exporter v1.0 - Mesh vertex data exported as arrays //\n"); + byteCount += sprintf(txtData + byteCount, "// //\n"); + byteCount += sprintf(txtData + byteCount, "// more info and bugs-report: github.com/raysan5/raylib //\n"); + byteCount += sprintf(txtData + byteCount, "// feedback and support: ray[at]raylib.com //\n"); + byteCount += sprintf(txtData + byteCount, "// //\n"); + byteCount += sprintf(txtData + byteCount, "// Copyright (c) 2023 Ramon Santamaria (@raysan5) //\n"); + byteCount += sprintf(txtData + byteCount, "// //\n"); + byteCount += sprintf(txtData + byteCount, "////////////////////////////////////////////////////////////////////////////////////////\n\n"); + + // Get file name from path and convert variable name to uppercase + char varFileName[256] = { 0 }; + strcpy(varFileName, GetFileNameWithoutExt(fileName)); + for (int i = 0; varFileName[i] != '\0'; i++) if ((varFileName[i] >= 'a') && (varFileName[i] <= 'z')) { varFileName[i] = varFileName[i] - 32; } + + // Add image information + byteCount += sprintf(txtData + byteCount, "// Mesh basic information\n"); + byteCount += sprintf(txtData + byteCount, "#define %s_VERTEX_COUNT %i\n", varFileName, mesh.vertexCount); + byteCount += sprintf(txtData + byteCount, "#define %s_TRIANGLE_COUNT %i\n\n", varFileName, mesh.triangleCount); + + // Define vertex attributes data as separate arrays + //----------------------------------------------------------------------------------------- + if (mesh.vertices != NULL) // Vertex position (XYZ - 3 components per vertex - float) + { + byteCount += sprintf(txtData + byteCount, "static float %s_VERTEX_DATA[%i] = { ", varFileName, mesh.vertexCount*3); + for (int i = 0; i < mesh.vertexCount*3 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.vertices[i]); + byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.vertices[mesh.vertexCount*3 - 1]); + } + + if (mesh.texcoords != NULL) // Vertex texture coordinates (UV - 2 components per vertex - float) + { + byteCount += sprintf(txtData + byteCount, "static float %s_TEXCOORD_DATA[%i] = { ", varFileName, mesh.vertexCount*2); + for (int i = 0; i < mesh.vertexCount*2 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.texcoords[i]); + byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.texcoords[mesh.vertexCount*2 - 1]); + } + + if (mesh.texcoords2 != NULL) // Vertex texture coordinates (UV - 2 components per vertex - float) + { + byteCount += sprintf(txtData + byteCount, "static float %s_TEXCOORD2_DATA[%i] = { ", varFileName, mesh.vertexCount*2); + for (int i = 0; i < mesh.vertexCount*2 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.texcoords2[i]); + byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.texcoords2[mesh.vertexCount*2 - 1]); + } + + if (mesh.normals != NULL) // Vertex normals (XYZ - 3 components per vertex - float) + { + byteCount += sprintf(txtData + byteCount, "static float %s_NORMAL_DATA[%i] = { ", varFileName, mesh.vertexCount*3); + for (int i = 0; i < mesh.vertexCount*3 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.normals[i]); + byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.normals[mesh.vertexCount*3 - 1]); + } + + if (mesh.tangents != NULL) // Vertex tangents (XYZW - 4 components per vertex - float) + { + byteCount += sprintf(txtData + byteCount, "static float %s_TANGENT_DATA[%i] = { ", varFileName, mesh.vertexCount*4); + for (int i = 0; i < mesh.vertexCount*4 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.tangents[i]); + byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.tangents[mesh.vertexCount*4 - 1]); + } + + if (mesh.colors != NULL) // Vertex colors (RGBA - 4 components per vertex - unsigned char) + { + byteCount += sprintf(txtData + byteCount, "static unsigned char %s_COLOR_DATA[%i] = { ", varFileName, mesh.vertexCount*4); + for (int i = 0; i < mesh.vertexCount*4 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "0x%x,\n" : "0x%x, "), mesh.colors[i]); + byteCount += sprintf(txtData + byteCount, "0x%x };\n\n", mesh.colors[mesh.vertexCount*4 - 1]); + } + + if (mesh.indices != NULL) // Vertex indices (3 index per triangle - unsigned short) + { + byteCount += sprintf(txtData + byteCount, "static unsigned short %s_INDEX_DATA[%i] = { ", varFileName, mesh.triangleCount*3); + for (int i = 0; i < mesh.triangleCount*3 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%i,\n" : "%i, "), mesh.indices[i]); + byteCount += sprintf(txtData + byteCount, "%i };\n", mesh.indices[mesh.triangleCount*3 - 1]); + } + //----------------------------------------------------------------------------------------- + + // NOTE: Text data size exported is determined by '\0' (NULL) character + success = SaveFileText(fileName, txtData); + + RL_FREE(txtData); + + //if (success != 0) TRACELOG(LOG_INFO, "FILEIO: [%s] Image as code exported successfully", fileName); + //else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to export image as code", fileName); + + return success; +} + +#if defined(SUPPORT_FILEFORMAT_OBJ) || defined(SUPPORT_FILEFORMAT_MTL) +// Process obj materials +static void ProcessMaterialsOBJ(Material *materials, tinyobj_material_t *mats, int materialCount) +{ + // Init model mats + for (int m = 0; m < materialCount; m++) + { + // Init material to default + // NOTE: Uses default shader, which only supports MATERIAL_MAP_DIFFUSE + materials[m] = LoadMaterialDefault(); + + if (mats == NULL) continue; + + // Get default texture, in case no texture is defined + // NOTE: rlgl default texture is a 1x1 pixel UNCOMPRESSED_R8G8B8A8 + materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = (Texture2D){ rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 }; + + if (mats[m].diffuse_texname != NULL) materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = LoadTexture(mats[m].diffuse_texname); //char *diffuse_texname; // map_Kd + else materials[m].maps[MATERIAL_MAP_DIFFUSE].color = (Color){ (unsigned char)(mats[m].diffuse[0]*255.0f), (unsigned char)(mats[m].diffuse[1]*255.0f), (unsigned char)(mats[m].diffuse[2]*255.0f), 255 }; //float diffuse[3]; + materials[m].maps[MATERIAL_MAP_DIFFUSE].value = 0.0f; + + if (mats[m].specular_texname != NULL) materials[m].maps[MATERIAL_MAP_SPECULAR].texture = LoadTexture(mats[m].specular_texname); //char *specular_texname; // map_Ks + materials[m].maps[MATERIAL_MAP_SPECULAR].color = (Color){ (unsigned char)(mats[m].specular[0]*255.0f), (unsigned char)(mats[m].specular[1]*255.0f), (unsigned char)(mats[m].specular[2]*255.0f), 255 }; //float specular[3]; + materials[m].maps[MATERIAL_MAP_SPECULAR].value = 0.0f; + + if (mats[m].bump_texname != NULL) materials[m].maps[MATERIAL_MAP_NORMAL].texture = LoadTexture(mats[m].bump_texname); //char *bump_texname; // map_bump, bump + materials[m].maps[MATERIAL_MAP_NORMAL].color = WHITE; + materials[m].maps[MATERIAL_MAP_NORMAL].value = mats[m].shininess; + + materials[m].maps[MATERIAL_MAP_EMISSION].color = (Color){ (unsigned char)(mats[m].emission[0]*255.0f), (unsigned char)(mats[m].emission[1]*255.0f), (unsigned char)(mats[m].emission[2]*255.0f), 255 }; //float emission[3]; + + if (mats[m].displacement_texname != NULL) materials[m].maps[MATERIAL_MAP_HEIGHT].texture = LoadTexture(mats[m].displacement_texname); //char *displacement_texname; // disp + } +} +#endif + +// Load materials from model file +Material *LoadMaterials(const char *fileName, int *materialCount) +{ + Material *materials = NULL; + unsigned int count = 0; + + // TODO: Support IQM and GLTF for materials parsing + +#if defined(SUPPORT_FILEFORMAT_MTL) + if (IsFileExtension(fileName, ".mtl")) + { + tinyobj_material_t *mats = NULL; + + int result = tinyobj_parse_mtl_file(&mats, &count, fileName); + if (result != TINYOBJ_SUCCESS) TRACELOG(LOG_WARNING, "MATERIAL: [%s] Failed to parse materials file", fileName); + + materials = RL_MALLOC(count*sizeof(Material)); + ProcessMaterialsOBJ(materials, mats, count); + + tinyobj_materials_free(mats, count); + } +#else + TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to load material file", fileName); +#endif + + *materialCount = count; + return materials; +} + +// Load default material (Supports: DIFFUSE, SPECULAR, NORMAL maps) +Material LoadMaterialDefault(void) +{ + Material material = { 0 }; + material.maps = (MaterialMap *)RL_CALLOC(MAX_MATERIAL_MAPS, sizeof(MaterialMap)); + + // Using rlgl default shader + material.shader.id = rlGetShaderIdDefault(); + material.shader.locs = rlGetShaderLocsDefault(); + + // Using rlgl default texture (1x1 pixel, UNCOMPRESSED_R8G8B8A8, 1 mipmap) + material.maps[MATERIAL_MAP_DIFFUSE].texture = (Texture2D){ rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 }; + //material.maps[MATERIAL_MAP_NORMAL].texture; // NOTE: By default, not set + //material.maps[MATERIAL_MAP_SPECULAR].texture; // NOTE: By default, not set + + material.maps[MATERIAL_MAP_DIFFUSE].color = WHITE; // Diffuse color + material.maps[MATERIAL_MAP_SPECULAR].color = WHITE; // Specular color + + return material; +} + +// Check if a material is valid (map textures loaded in GPU) +bool IsMaterialValid(Material material) +{ + bool result = false; + + if ((material.maps != NULL) && // Validate material contain some map + (material.shader.id > 0)) result = true; // Validate material shader is valid + + // TODO: Check if available maps contain loaded textures + + return result; +} + +// Unload material from memory +void UnloadMaterial(Material material) +{ + // Unload material shader (avoid unloading default shader, managed by raylib) + if (material.shader.id != rlGetShaderIdDefault()) UnloadShader(material.shader); + + // Unload loaded texture maps (avoid unloading default texture, managed by raylib) + if (material.maps != NULL) + { + for (int i = 0; i < MAX_MATERIAL_MAPS; i++) + { + if (material.maps[i].texture.id != rlGetTextureIdDefault()) rlUnloadTexture(material.maps[i].texture.id); + } + } + + RL_FREE(material.maps); +} + +// Set texture for a material map type (MATERIAL_MAP_DIFFUSE, MATERIAL_MAP_SPECULAR...) +// NOTE: Previous texture should be manually unloaded +void SetMaterialTexture(Material *material, int mapType, Texture2D texture) +{ + material->maps[mapType].texture = texture; +} + +// Set the material for a mesh +void SetModelMeshMaterial(Model *model, int meshId, int materialId) +{ + if (meshId >= model->meshCount) TRACELOG(LOG_WARNING, "MESH: Id greater than mesh count"); + else if (materialId >= model->materialCount) TRACELOG(LOG_WARNING, "MATERIAL: Id greater than material count"); + else model->meshMaterial[meshId] = materialId; +} + +// Load model animations from file +ModelAnimation *LoadModelAnimations(const char *fileName, int *animCount) +{ + ModelAnimation *animations = NULL; + +#if defined(SUPPORT_FILEFORMAT_IQM) + if (IsFileExtension(fileName, ".iqm")) animations = LoadModelAnimationsIQM(fileName, animCount); +#endif +#if defined(SUPPORT_FILEFORMAT_M3D) + if (IsFileExtension(fileName, ".m3d")) animations = LoadModelAnimationsM3D(fileName, animCount); +#endif +#if defined(SUPPORT_FILEFORMAT_GLTF) + if (IsFileExtension(fileName, ".gltf;.glb")) animations = LoadModelAnimationsGLTF(fileName, animCount); +#endif + + return animations; +} + +// Update model animated bones transform matrices for a given frame +// NOTE: Updated data is not uploaded to GPU but kept at model.meshes[i].boneMatrices[boneId], +// to be uploaded to shader at drawing, in case GPU skinning is enabled +void UpdateModelAnimationBones(Model model, ModelAnimation anim, int frame) +{ + if ((anim.frameCount > 0) && (anim.bones != NULL) && (anim.framePoses != NULL)) + { + if (frame >= anim.frameCount) frame = frame%anim.frameCount; + + for (int i = 0; i < model.meshCount; i++) + { + if (model.meshes[i].boneMatrices) + { + assert(model.meshes[i].boneCount == anim.boneCount); + + for (int boneId = 0; boneId < model.meshes[i].boneCount; boneId++) + { + Vector3 inTranslation = model.bindPose[boneId].translation; + Quaternion inRotation = model.bindPose[boneId].rotation; + Vector3 inScale = model.bindPose[boneId].scale; + + Vector3 outTranslation = anim.framePoses[frame][boneId].translation; + Quaternion outRotation = anim.framePoses[frame][boneId].rotation; + Vector3 outScale = anim.framePoses[frame][boneId].scale; + + Vector3 invTranslation = Vector3RotateByQuaternion(Vector3Negate(inTranslation), QuaternionInvert(inRotation)); + Quaternion invRotation = QuaternionInvert(inRotation); + Vector3 invScale = Vector3Divide((Vector3){ 1.0f, 1.0f, 1.0f }, inScale); + + Vector3 boneTranslation = Vector3Add( + Vector3RotateByQuaternion(Vector3Multiply(outScale, invTranslation), + outRotation), outTranslation); + Quaternion boneRotation = QuaternionMultiply(outRotation, invRotation); + Vector3 boneScale = Vector3Multiply(outScale, invScale); + + Matrix boneMatrix = MatrixMultiply(MatrixMultiply( + QuaternionToMatrix(boneRotation), + MatrixTranslate(boneTranslation.x, boneTranslation.y, boneTranslation.z)), + MatrixScale(boneScale.x, boneScale.y, boneScale.z)); + + model.meshes[i].boneMatrices[boneId] = boneMatrix; + } + } + } + } +} + +// at least 2x speed up vs the old method +// Update model animated vertex data (positions and normals) for a given frame +// NOTE: Updated data is uploaded to GPU +void UpdateModelAnimation(Model model, ModelAnimation anim, int frame) +{ + UpdateModelAnimationBones(model,anim,frame); + for (int m = 0; m < model.meshCount; m++) + { + Mesh mesh = model.meshes[m]; + Vector3 animVertex = { 0 }; + Vector3 animNormal = { 0 }; + int boneId = 0; + int boneCounter = 0; + float boneWeight = 0.0; + bool updated = false; // Flag to check when anim vertex information is updated + const int vValues = mesh.vertexCount*3; + for (int vCounter = 0; vCounter < vValues; vCounter += 3) + { + mesh.animVertices[vCounter] = 0; + mesh.animVertices[vCounter + 1] = 0; + mesh.animVertices[vCounter + 2] = 0; + if (mesh.animNormals != NULL) + { + mesh.animNormals[vCounter] = 0; + mesh.animNormals[vCounter + 1] = 0; + mesh.animNormals[vCounter + 2] = 0; + } + // Iterates over 4 bones per vertex + for (int j = 0; j < 4; j++, boneCounter++) + { + boneWeight = mesh.boneWeights[boneCounter]; + boneId = mesh.boneIds[boneCounter]; + // Early stop when no transformation will be applied + if (boneWeight == 0.0f) continue; + animVertex = (Vector3){ mesh.vertices[vCounter], mesh.vertices[vCounter + 1], mesh.vertices[vCounter + 2] }; + animVertex = Vector3Transform(animVertex,model.meshes[m].boneMatrices[boneId]); + mesh.animVertices[vCounter] += animVertex.x * boneWeight; + mesh.animVertices[vCounter+1] += animVertex.y * boneWeight; + mesh.animVertices[vCounter+2] += animVertex.z * boneWeight; + updated = true; + // Normals processing + // NOTE: We use meshes.baseNormals (default normal) to calculate meshes.normals (animated normals) + if (mesh.normals != NULL) + { + animNormal = (Vector3){ mesh.normals[vCounter], mesh.normals[vCounter + 1], mesh.normals[vCounter + 2] }; + animNormal = Vector3Transform(animNormal,model.meshes[m].boneMatrices[boneId]); + mesh.animNormals[vCounter] += animNormal.x*boneWeight; + mesh.animNormals[vCounter + 1] += animNormal.y*boneWeight; + mesh.animNormals[vCounter + 2] += animNormal.z*boneWeight; + } + } + } + if (updated) + { + rlUpdateVertexBuffer(mesh.vboId[0], mesh.animVertices, mesh.vertexCount*3*sizeof(float), 0); // Update vertex position + rlUpdateVertexBuffer(mesh.vboId[2], mesh.animNormals, mesh.vertexCount*3*sizeof(float), 0); // Update vertex normals + } + } +} + +// Unload animation array data +void UnloadModelAnimations(ModelAnimation *animations, int animCount) +{ + for (int i = 0; i < animCount; i++) UnloadModelAnimation(animations[i]); + RL_FREE(animations); +} + +// Unload animation data +void UnloadModelAnimation(ModelAnimation anim) +{ + for (int i = 0; i < anim.frameCount; i++) RL_FREE(anim.framePoses[i]); + + RL_FREE(anim.bones); + RL_FREE(anim.framePoses); +} + +// Check model animation skeleton match +// NOTE: Only number of bones and parent connections are checked +bool IsModelAnimationValid(Model model, ModelAnimation anim) +{ + int result = true; + + if (model.boneCount != anim.boneCount) result = false; + else + { + for (int i = 0; i < model.boneCount; i++) + { + if (model.bones[i].parent != anim.bones[i].parent) { result = false; break; } + } + } + + return result; +} + +#if defined(SUPPORT_MESH_GENERATION) +// Generate polygonal mesh +Mesh GenMeshPoly(int sides, float radius) +{ + Mesh mesh = { 0 }; + + if (sides < 3) return mesh; // Security check + + int vertexCount = sides*3; + + // Vertices definition + Vector3 *vertices = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3)); + + float d = 0.0f, dStep = 360.0f/sides; + for (int v = 0; v < vertexCount - 2; v += 3) + { + vertices[v] = (Vector3){ 0.0f, 0.0f, 0.0f }; + vertices[v + 1] = (Vector3){ sinf(DEG2RAD*d)*radius, 0.0f, cosf(DEG2RAD*d)*radius }; + vertices[v + 2] = (Vector3){ sinf(DEG2RAD*(d+dStep))*radius, 0.0f, cosf(DEG2RAD*(d+dStep))*radius }; + d += dStep; + } + + // Normals definition + Vector3 *normals = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3)); + for (int n = 0; n < vertexCount; n++) normals[n] = (Vector3){ 0.0f, 1.0f, 0.0f }; // Vector3.up; + + // TexCoords definition + Vector2 *texcoords = (Vector2 *)RL_MALLOC(vertexCount*sizeof(Vector2)); + for (int n = 0; n < vertexCount; n++) texcoords[n] = (Vector2){ 0.0f, 0.0f }; + + mesh.vertexCount = vertexCount; + mesh.triangleCount = sides; + mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + + // Mesh vertices position array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.vertices[3*i] = vertices[i].x; + mesh.vertices[3*i + 1] = vertices[i].y; + mesh.vertices[3*i + 2] = vertices[i].z; + } + + // Mesh texcoords array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.texcoords[2*i] = texcoords[i].x; + mesh.texcoords[2*i + 1] = texcoords[i].y; + } + + // Mesh normals array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.normals[3*i] = normals[i].x; + mesh.normals[3*i + 1] = normals[i].y; + mesh.normals[3*i + 2] = normals[i].z; + } + + RL_FREE(vertices); + RL_FREE(normals); + RL_FREE(texcoords); + + // Upload vertex data to GPU (static mesh) + // NOTE: mesh.vboId array is allocated inside UploadMesh() + UploadMesh(&mesh, false); + + return mesh; +} + +// Generate plane mesh (with subdivisions) +Mesh GenMeshPlane(float width, float length, int resX, int resZ) +{ + Mesh mesh = { 0 }; + +#define CUSTOM_MESH_GEN_PLANE +#if defined(CUSTOM_MESH_GEN_PLANE) + resX++; + resZ++; + + // Vertices definition + int vertexCount = resX*resZ; // vertices get reused for the faces + + Vector3 *vertices = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3)); + for (int z = 0; z < resZ; z++) + { + // [-length/2, length/2] + float zPos = ((float)z/(resZ - 1) - 0.5f)*length; + for (int x = 0; x < resX; x++) + { + // [-width/2, width/2] + float xPos = ((float)x/(resX - 1) - 0.5f)*width; + vertices[x + z*resX] = (Vector3){ xPos, 0.0f, zPos }; + } + } + + // Normals definition + Vector3 *normals = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3)); + for (int n = 0; n < vertexCount; n++) normals[n] = (Vector3){ 0.0f, 1.0f, 0.0f }; // Vector3.up; + + // TexCoords definition + Vector2 *texcoords = (Vector2 *)RL_MALLOC(vertexCount*sizeof(Vector2)); + for (int v = 0; v < resZ; v++) + { + for (int u = 0; u < resX; u++) + { + texcoords[u + v*resX] = (Vector2){ (float)u/(resX - 1), (float)v/(resZ - 1) }; + } + } + + // Triangles definition (indices) + int numFaces = (resX - 1)*(resZ - 1); + int *triangles = (int *)RL_MALLOC(numFaces*6*sizeof(int)); + int t = 0; + for (int face = 0; face < numFaces; face++) + { + // Retrieve lower left corner from face ind + int i = face + face/(resX - 1); + + triangles[t++] = i + resX; + triangles[t++] = i + 1; + triangles[t++] = i; + + triangles[t++] = i + resX; + triangles[t++] = i + resX + 1; + triangles[t++] = i + 1; + } + + mesh.vertexCount = vertexCount; + mesh.triangleCount = numFaces*2; + mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.indices = (unsigned short *)RL_MALLOC(mesh.triangleCount*3*sizeof(unsigned short)); + + // Mesh vertices position array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.vertices[3*i] = vertices[i].x; + mesh.vertices[3*i + 1] = vertices[i].y; + mesh.vertices[3*i + 2] = vertices[i].z; + } + + // Mesh texcoords array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.texcoords[2*i] = texcoords[i].x; + mesh.texcoords[2*i + 1] = texcoords[i].y; + } + + // Mesh normals array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.normals[3*i] = normals[i].x; + mesh.normals[3*i + 1] = normals[i].y; + mesh.normals[3*i + 2] = normals[i].z; + } + + // Mesh indices array initialization + for (int i = 0; i < mesh.triangleCount*3; i++) mesh.indices[i] = triangles[i]; + + RL_FREE(vertices); + RL_FREE(normals); + RL_FREE(texcoords); + RL_FREE(triangles); + +#else // Use par_shapes library to generate plane mesh + + par_shapes_mesh *plane = par_shapes_create_plane(resX, resZ); // No normals/texcoords generated!!! + par_shapes_scale(plane, width, length, 1.0f); + par_shapes_rotate(plane, -PI/2.0f, (float[]){ 1, 0, 0 }); + par_shapes_translate(plane, -width/2, 0.0f, length/2); + + mesh.vertices = (float *)RL_MALLOC(plane->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(plane->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(plane->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = plane->ntriangles*3; + mesh.triangleCount = plane->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = plane->points[plane->triangles[k]*3]; + mesh.vertices[k*3 + 1] = plane->points[plane->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = plane->points[plane->triangles[k]*3 + 2]; + + mesh.normals[k*3] = plane->normals[plane->triangles[k]*3]; + mesh.normals[k*3 + 1] = plane->normals[plane->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = plane->normals[plane->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = plane->tcoords[plane->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = plane->tcoords[plane->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(plane); +#endif + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + + return mesh; +} + +// Generated cuboid mesh +Mesh GenMeshCube(float width, float height, float length) +{ + Mesh mesh = { 0 }; + +#define CUSTOM_MESH_GEN_CUBE +#if defined(CUSTOM_MESH_GEN_CUBE) + float vertices[] = { + -width/2, -height/2, length/2, + width/2, -height/2, length/2, + width/2, height/2, length/2, + -width/2, height/2, length/2, + -width/2, -height/2, -length/2, + -width/2, height/2, -length/2, + width/2, height/2, -length/2, + width/2, -height/2, -length/2, + -width/2, height/2, -length/2, + -width/2, height/2, length/2, + width/2, height/2, length/2, + width/2, height/2, -length/2, + -width/2, -height/2, -length/2, + width/2, -height/2, -length/2, + width/2, -height/2, length/2, + -width/2, -height/2, length/2, + width/2, -height/2, -length/2, + width/2, height/2, -length/2, + width/2, height/2, length/2, + width/2, -height/2, length/2, + -width/2, -height/2, -length/2, + -width/2, -height/2, length/2, + -width/2, height/2, length/2, + -width/2, height/2, -length/2 + }; + + float texcoords[] = { + 0.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 0.0f, 1.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 0.0f, 1.0f, + 0.0f, 0.0f, + 0.0f, 1.0f, + 0.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 1.0f, 1.0f, + 0.0f, 1.0f, + 0.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 0.0f, 1.0f, + 0.0f, 0.0f, + 0.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 0.0f, 1.0f + }; + + float normals[] = { + 0.0f, 0.0f, 1.0f, + 0.0f, 0.0f, 1.0f, + 0.0f, 0.0f, 1.0f, + 0.0f, 0.0f, 1.0f, + 0.0f, 0.0f,-1.0f, + 0.0f, 0.0f,-1.0f, + 0.0f, 0.0f,-1.0f, + 0.0f, 0.0f,-1.0f, + 0.0f, 1.0f, 0.0f, + 0.0f, 1.0f, 0.0f, + 0.0f, 1.0f, 0.0f, + 0.0f, 1.0f, 0.0f, + 0.0f,-1.0f, 0.0f, + 0.0f,-1.0f, 0.0f, + 0.0f,-1.0f, 0.0f, + 0.0f,-1.0f, 0.0f, + 1.0f, 0.0f, 0.0f, + 1.0f, 0.0f, 0.0f, + 1.0f, 0.0f, 0.0f, + 1.0f, 0.0f, 0.0f, + -1.0f, 0.0f, 0.0f, + -1.0f, 0.0f, 0.0f, + -1.0f, 0.0f, 0.0f, + -1.0f, 0.0f, 0.0f + }; + + mesh.vertices = (float *)RL_MALLOC(24*3*sizeof(float)); + memcpy(mesh.vertices, vertices, 24*3*sizeof(float)); + + mesh.texcoords = (float *)RL_MALLOC(24*2*sizeof(float)); + memcpy(mesh.texcoords, texcoords, 24*2*sizeof(float)); + + mesh.normals = (float *)RL_MALLOC(24*3*sizeof(float)); + memcpy(mesh.normals, normals, 24*3*sizeof(float)); + + mesh.indices = (unsigned short *)RL_MALLOC(36*sizeof(unsigned short)); + + int k = 0; + + // Indices can be initialized right now + for (int i = 0; i < 36; i += 6) + { + mesh.indices[i] = 4*k; + mesh.indices[i + 1] = 4*k + 1; + mesh.indices[i + 2] = 4*k + 2; + mesh.indices[i + 3] = 4*k; + mesh.indices[i + 4] = 4*k + 2; + mesh.indices[i + 5] = 4*k + 3; + + k++; + } + + mesh.vertexCount = 24; + mesh.triangleCount = 12; + +#else // Use par_shapes library to generate cube mesh +/* +// Platonic solids: +par_shapes_mesh* par_shapes_create_tetrahedron(); // 4 sides polyhedron (pyramid) +par_shapes_mesh* par_shapes_create_cube(); // 6 sides polyhedron (cube) +par_shapes_mesh* par_shapes_create_octahedron(); // 8 sides polyhedron (diamond) +par_shapes_mesh* par_shapes_create_dodecahedron(); // 12 sides polyhedron +par_shapes_mesh* par_shapes_create_icosahedron(); // 20 sides polyhedron +*/ + // Platonic solid generation: cube (6 sides) + // NOTE: No normals/texcoords generated by default + par_shapes_mesh *cube = par_shapes_create_cube(); + cube->tcoords = PAR_MALLOC(float, 2*cube->npoints); + for (int i = 0; i < 2*cube->npoints; i++) cube->tcoords[i] = 0.0f; + par_shapes_scale(cube, width, height, length); + par_shapes_translate(cube, -width/2, 0.0f, -length/2); + par_shapes_compute_normals(cube); + + mesh.vertices = (float *)RL_MALLOC(cube->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(cube->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(cube->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = cube->ntriangles*3; + mesh.triangleCount = cube->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = cube->points[cube->triangles[k]*3]; + mesh.vertices[k*3 + 1] = cube->points[cube->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = cube->points[cube->triangles[k]*3 + 2]; + + mesh.normals[k*3] = cube->normals[cube->triangles[k]*3]; + mesh.normals[k*3 + 1] = cube->normals[cube->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = cube->normals[cube->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = cube->tcoords[cube->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = cube->tcoords[cube->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(cube); +#endif + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + + return mesh; +} + +// Generate sphere mesh (standard sphere) +Mesh GenMeshSphere(float radius, int rings, int slices) +{ + Mesh mesh = { 0 }; + + if ((rings >= 3) && (slices >= 3)) + { + par_shapes_set_epsilon_degenerate_sphere(0.0); + par_shapes_mesh *sphere = par_shapes_create_parametric_sphere(slices, rings); + par_shapes_scale(sphere, radius, radius, radius); + // NOTE: Soft normals are computed internally + + mesh.vertices = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(sphere->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = sphere->ntriangles*3; + mesh.triangleCount = sphere->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = sphere->points[sphere->triangles[k]*3]; + mesh.vertices[k*3 + 1] = sphere->points[sphere->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = sphere->points[sphere->triangles[k]*3 + 2]; + + mesh.normals[k*3] = sphere->normals[sphere->triangles[k]*3]; + mesh.normals[k*3 + 1] = sphere->normals[sphere->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = sphere->normals[sphere->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = sphere->tcoords[sphere->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = sphere->tcoords[sphere->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(sphere); + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + } + else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: sphere"); + + return mesh; +} + +// Generate hemisphere mesh (half sphere, no bottom cap) +Mesh GenMeshHemiSphere(float radius, int rings, int slices) +{ + Mesh mesh = { 0 }; + + if ((rings >= 3) && (slices >= 3)) + { + if (radius < 0.0f) radius = 0.0f; + + par_shapes_mesh *sphere = par_shapes_create_hemisphere(slices, rings); + par_shapes_scale(sphere, radius, radius, radius); + // NOTE: Soft normals are computed internally + + mesh.vertices = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(sphere->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = sphere->ntriangles*3; + mesh.triangleCount = sphere->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = sphere->points[sphere->triangles[k]*3]; + mesh.vertices[k*3 + 1] = sphere->points[sphere->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = sphere->points[sphere->triangles[k]*3 + 2]; + + mesh.normals[k*3] = sphere->normals[sphere->triangles[k]*3]; + mesh.normals[k*3 + 1] = sphere->normals[sphere->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = sphere->normals[sphere->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = sphere->tcoords[sphere->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = sphere->tcoords[sphere->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(sphere); + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + } + else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: hemisphere"); + + return mesh; +} + +// Generate cylinder mesh +Mesh GenMeshCylinder(float radius, float height, int slices) +{ + Mesh mesh = { 0 }; + + if (slices >= 3) + { + // Instance a cylinder that sits on the Z=0 plane using the given tessellation + // levels across the UV domain. Think of "slices" like a number of pizza + // slices, and "stacks" like a number of stacked rings + // Height and radius are both 1.0, but they can easily be changed with par_shapes_scale + par_shapes_mesh *cylinder = par_shapes_create_cylinder(slices, 8); + par_shapes_scale(cylinder, radius, radius, height); + par_shapes_rotate(cylinder, -PI/2.0f, (float[]){ 1, 0, 0 }); + + // Generate an orientable disk shape (top cap) + par_shapes_mesh *capTop = par_shapes_create_disk(radius, slices, (float[]){ 0, 0, 0 }, (float[]){ 0, 0, 1 }); + capTop->tcoords = PAR_MALLOC(float, 2*capTop->npoints); + for (int i = 0; i < 2*capTop->npoints; i++) capTop->tcoords[i] = 0.0f; + par_shapes_rotate(capTop, -PI/2.0f, (float[]){ 1, 0, 0 }); + par_shapes_rotate(capTop, 90*DEG2RAD, (float[]){ 0, 1, 0 }); + par_shapes_translate(capTop, 0, height, 0); + + // Generate an orientable disk shape (bottom cap) + par_shapes_mesh *capBottom = par_shapes_create_disk(radius, slices, (float[]){ 0, 0, 0 }, (float[]){ 0, 0, -1 }); + capBottom->tcoords = PAR_MALLOC(float, 2*capBottom->npoints); + for (int i = 0; i < 2*capBottom->npoints; i++) capBottom->tcoords[i] = 0.95f; + par_shapes_rotate(capBottom, PI/2.0f, (float[]){ 1, 0, 0 }); + par_shapes_rotate(capBottom, -90*DEG2RAD, (float[]){ 0, 1, 0 }); + + par_shapes_merge_and_free(cylinder, capTop); + par_shapes_merge_and_free(cylinder, capBottom); + + mesh.vertices = (float *)RL_MALLOC(cylinder->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(cylinder->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(cylinder->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = cylinder->ntriangles*3; + mesh.triangleCount = cylinder->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = cylinder->points[cylinder->triangles[k]*3]; + mesh.vertices[k*3 + 1] = cylinder->points[cylinder->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = cylinder->points[cylinder->triangles[k]*3 + 2]; + + mesh.normals[k*3] = cylinder->normals[cylinder->triangles[k]*3]; + mesh.normals[k*3 + 1] = cylinder->normals[cylinder->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = cylinder->normals[cylinder->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = cylinder->tcoords[cylinder->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = cylinder->tcoords[cylinder->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(cylinder); + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + } + else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: cylinder"); + + return mesh; +} + +// Generate cone/pyramid mesh +Mesh GenMeshCone(float radius, float height, int slices) +{ + Mesh mesh = { 0 }; + + if (slices >= 3) + { + // Instance a cone that sits on the Z=0 plane using the given tessellation + // levels across the UV domain. Think of "slices" like a number of pizza + // slices, and "stacks" like a number of stacked rings + // Height and radius are both 1.0, but they can easily be changed with par_shapes_scale + par_shapes_mesh *cone = par_shapes_create_cone(slices, 8); + par_shapes_scale(cone, radius, radius, height); + par_shapes_rotate(cone, -PI/2.0f, (float[]){ 1, 0, 0 }); + par_shapes_rotate(cone, PI/2.0f, (float[]){ 0, 1, 0 }); + + // Generate an orientable disk shape (bottom cap) + par_shapes_mesh *capBottom = par_shapes_create_disk(radius, slices, (float[]){ 0, 0, 0 }, (float[]){ 0, 0, -1 }); + capBottom->tcoords = PAR_MALLOC(float, 2*capBottom->npoints); + for (int i = 0; i < 2*capBottom->npoints; i++) capBottom->tcoords[i] = 0.95f; + par_shapes_rotate(capBottom, PI/2.0f, (float[]){ 1, 0, 0 }); + + par_shapes_merge_and_free(cone, capBottom); + + mesh.vertices = (float *)RL_MALLOC(cone->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(cone->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(cone->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = cone->ntriangles*3; + mesh.triangleCount = cone->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = cone->points[cone->triangles[k]*3]; + mesh.vertices[k*3 + 1] = cone->points[cone->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = cone->points[cone->triangles[k]*3 + 2]; + + mesh.normals[k*3] = cone->normals[cone->triangles[k]*3]; + mesh.normals[k*3 + 1] = cone->normals[cone->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = cone->normals[cone->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = cone->tcoords[cone->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = cone->tcoords[cone->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(cone); + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + } + else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: cone"); + + return mesh; +} + +// Generate torus mesh +Mesh GenMeshTorus(float radius, float size, int radSeg, int sides) +{ + Mesh mesh = { 0 }; + + if ((sides >= 3) && (radSeg >= 3)) + { + if (radius > 1.0f) radius = 1.0f; + else if (radius < 0.1f) radius = 0.1f; + + // Create a donut that sits on the Z=0 plane with the specified inner radius + // The outer radius can be controlled with par_shapes_scale + par_shapes_mesh *torus = par_shapes_create_torus(radSeg, sides, radius); + par_shapes_scale(torus, size/2, size/2, size/2); + + mesh.vertices = (float *)RL_MALLOC(torus->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(torus->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(torus->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = torus->ntriangles*3; + mesh.triangleCount = torus->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = torus->points[torus->triangles[k]*3]; + mesh.vertices[k*3 + 1] = torus->points[torus->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = torus->points[torus->triangles[k]*3 + 2]; + + mesh.normals[k*3] = torus->normals[torus->triangles[k]*3]; + mesh.normals[k*3 + 1] = torus->normals[torus->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = torus->normals[torus->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = torus->tcoords[torus->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = torus->tcoords[torus->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(torus); + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + } + else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: torus"); + + return mesh; +} + +// Generate trefoil knot mesh +Mesh GenMeshKnot(float radius, float size, int radSeg, int sides) +{ + Mesh mesh = { 0 }; + + if ((sides >= 3) && (radSeg >= 3)) + { + if (radius > 3.0f) radius = 3.0f; + else if (radius < 0.5f) radius = 0.5f; + + par_shapes_mesh *knot = par_shapes_create_trefoil_knot(radSeg, sides, radius); + par_shapes_scale(knot, size, size, size); + + mesh.vertices = (float *)RL_MALLOC(knot->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(knot->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(knot->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = knot->ntriangles*3; + mesh.triangleCount = knot->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = knot->points[knot->triangles[k]*3]; + mesh.vertices[k*3 + 1] = knot->points[knot->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = knot->points[knot->triangles[k]*3 + 2]; + + mesh.normals[k*3] = knot->normals[knot->triangles[k]*3]; + mesh.normals[k*3 + 1] = knot->normals[knot->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = knot->normals[knot->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = knot->tcoords[knot->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = knot->tcoords[knot->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(knot); + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + } + else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: knot"); + + return mesh; +} + +// Generate a mesh from heightmap +// NOTE: Vertex data is uploaded to GPU +Mesh GenMeshHeightmap(Image heightmap, Vector3 size) +{ + #define GRAY_VALUE(c) ((float)(c.r + c.g + c.b)/3.0f) + + Mesh mesh = { 0 }; + + int mapX = heightmap.width; + int mapZ = heightmap.height; + + Color *pixels = LoadImageColors(heightmap); + + // NOTE: One vertex per pixel + mesh.triangleCount = (mapX - 1)*(mapZ - 1)*2; // One quad every four pixels + + mesh.vertexCount = mesh.triangleCount*3; + + mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float)); + mesh.colors = NULL; + + int vCounter = 0; // Used to count vertices float by float + int tcCounter = 0; // Used to count texcoords float by float + int nCounter = 0; // Used to count normals float by float + + Vector3 scaleFactor = { size.x/(mapX - 1), size.y/255.0f, size.z/(mapZ - 1) }; + + Vector3 vA = { 0 }; + Vector3 vB = { 0 }; + Vector3 vC = { 0 }; + Vector3 vN = { 0 }; + + for (int z = 0; z < mapZ-1; z++) + { + for (int x = 0; x < mapX-1; x++) + { + // Fill vertices array with data + //---------------------------------------------------------- + + // one triangle - 3 vertex + mesh.vertices[vCounter] = (float)x*scaleFactor.x; + mesh.vertices[vCounter + 1] = GRAY_VALUE(pixels[x + z*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 2] = (float)z*scaleFactor.z; + + mesh.vertices[vCounter + 3] = (float)x*scaleFactor.x; + mesh.vertices[vCounter + 4] = GRAY_VALUE(pixels[x + (z + 1)*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 5] = (float)(z + 1)*scaleFactor.z; + + mesh.vertices[vCounter + 6] = (float)(x + 1)*scaleFactor.x; + mesh.vertices[vCounter + 7] = GRAY_VALUE(pixels[(x + 1) + z*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 8] = (float)z*scaleFactor.z; + + // Another triangle - 3 vertex + mesh.vertices[vCounter + 9] = mesh.vertices[vCounter + 6]; + mesh.vertices[vCounter + 10] = mesh.vertices[vCounter + 7]; + mesh.vertices[vCounter + 11] = mesh.vertices[vCounter + 8]; + + mesh.vertices[vCounter + 12] = mesh.vertices[vCounter + 3]; + mesh.vertices[vCounter + 13] = mesh.vertices[vCounter + 4]; + mesh.vertices[vCounter + 14] = mesh.vertices[vCounter + 5]; + + mesh.vertices[vCounter + 15] = (float)(x + 1)*scaleFactor.x; + mesh.vertices[vCounter + 16] = GRAY_VALUE(pixels[(x + 1) + (z + 1)*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 17] = (float)(z + 1)*scaleFactor.z; + vCounter += 18; // 6 vertex, 18 floats + + // Fill texcoords array with data + //-------------------------------------------------------------- + mesh.texcoords[tcCounter] = (float)x/(mapX - 1); + mesh.texcoords[tcCounter + 1] = (float)z/(mapZ - 1); + + mesh.texcoords[tcCounter + 2] = (float)x/(mapX - 1); + mesh.texcoords[tcCounter + 3] = (float)(z + 1)/(mapZ - 1); + + mesh.texcoords[tcCounter + 4] = (float)(x + 1)/(mapX - 1); + mesh.texcoords[tcCounter + 5] = (float)z/(mapZ - 1); + + mesh.texcoords[tcCounter + 6] = mesh.texcoords[tcCounter + 4]; + mesh.texcoords[tcCounter + 7] = mesh.texcoords[tcCounter + 5]; + + mesh.texcoords[tcCounter + 8] = mesh.texcoords[tcCounter + 2]; + mesh.texcoords[tcCounter + 9] = mesh.texcoords[tcCounter + 3]; + + mesh.texcoords[tcCounter + 10] = (float)(x + 1)/(mapX - 1); + mesh.texcoords[tcCounter + 11] = (float)(z + 1)/(mapZ - 1); + tcCounter += 12; // 6 texcoords, 12 floats + + // Fill normals array with data + //-------------------------------------------------------------- + for (int i = 0; i < 18; i += 9) + { + vA.x = mesh.vertices[nCounter + i]; + vA.y = mesh.vertices[nCounter + i + 1]; + vA.z = mesh.vertices[nCounter + i + 2]; + + vB.x = mesh.vertices[nCounter + i + 3]; + vB.y = mesh.vertices[nCounter + i + 4]; + vB.z = mesh.vertices[nCounter + i + 5]; + + vC.x = mesh.vertices[nCounter + i + 6]; + vC.y = mesh.vertices[nCounter + i + 7]; + vC.z = mesh.vertices[nCounter + i + 8]; + + vN = Vector3Normalize(Vector3CrossProduct(Vector3Subtract(vB, vA), Vector3Subtract(vC, vA))); + + mesh.normals[nCounter + i] = vN.x; + mesh.normals[nCounter + i + 1] = vN.y; + mesh.normals[nCounter + i + 2] = vN.z; + + mesh.normals[nCounter + i + 3] = vN.x; + mesh.normals[nCounter + i + 4] = vN.y; + mesh.normals[nCounter + i + 5] = vN.z; + + mesh.normals[nCounter + i + 6] = vN.x; + mesh.normals[nCounter + i + 7] = vN.y; + mesh.normals[nCounter + i + 8] = vN.z; + } + + nCounter += 18; // 6 vertex, 18 floats + } + } + + UnloadImageColors(pixels); // Unload pixels color data + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + + return mesh; +} + +// Generate a cubes mesh from pixel data +// NOTE: Vertex data is uploaded to GPU +Mesh GenMeshCubicmap(Image cubicmap, Vector3 cubeSize) +{ + #define COLOR_EQUAL(col1, col2) ((col1.r == col2.r)&&(col1.g == col2.g)&&(col1.b == col2.b)&&(col1.a == col2.a)) + + Mesh mesh = { 0 }; + + Color *pixels = LoadImageColors(cubicmap); + + // NOTE: Max possible number of triangles numCubes*(12 triangles by cube) + int maxTriangles = cubicmap.width*cubicmap.height*12; + + int vCounter = 0; // Used to count vertices + int tcCounter = 0; // Used to count texcoords + int nCounter = 0; // Used to count normals + + float w = cubeSize.x; + float h = cubeSize.z; + float h2 = cubeSize.y; + + Vector3 *mapVertices = (Vector3 *)RL_MALLOC(maxTriangles*3*sizeof(Vector3)); + Vector2 *mapTexcoords = (Vector2 *)RL_MALLOC(maxTriangles*3*sizeof(Vector2)); + Vector3 *mapNormals = (Vector3 *)RL_MALLOC(maxTriangles*3*sizeof(Vector3)); + + // Define the 6 normals of the cube, we will combine them accordingly later... + Vector3 n1 = { 1.0f, 0.0f, 0.0f }; + Vector3 n2 = { -1.0f, 0.0f, 0.0f }; + Vector3 n3 = { 0.0f, 1.0f, 0.0f }; + Vector3 n4 = { 0.0f, -1.0f, 0.0f }; + Vector3 n5 = { 0.0f, 0.0f, -1.0f }; + Vector3 n6 = { 0.0f, 0.0f, 1.0f }; + + // NOTE: We use texture rectangles to define different textures for top-bottom-front-back-right-left (6) + typedef struct RectangleF { + float x; + float y; + float width; + float height; + } RectangleF; + + RectangleF rightTexUV = { 0.0f, 0.0f, 0.5f, 0.5f }; + RectangleF leftTexUV = { 0.5f, 0.0f, 0.5f, 0.5f }; + RectangleF frontTexUV = { 0.0f, 0.0f, 0.5f, 0.5f }; + RectangleF backTexUV = { 0.5f, 0.0f, 0.5f, 0.5f }; + RectangleF topTexUV = { 0.0f, 0.5f, 0.5f, 0.5f }; + RectangleF bottomTexUV = { 0.5f, 0.5f, 0.5f, 0.5f }; + + for (int z = 0; z < cubicmap.height; ++z) + { + for (int x = 0; x < cubicmap.width; ++x) + { + // Define the 8 vertex of the cube, we will combine them accordingly later... + Vector3 v1 = { w*(x - 0.5f), h2, h*(z - 0.5f) }; + Vector3 v2 = { w*(x - 0.5f), h2, h*(z + 0.5f) }; + Vector3 v3 = { w*(x + 0.5f), h2, h*(z + 0.5f) }; + Vector3 v4 = { w*(x + 0.5f), h2, h*(z - 0.5f) }; + Vector3 v5 = { w*(x + 0.5f), 0, h*(z - 0.5f) }; + Vector3 v6 = { w*(x - 0.5f), 0, h*(z - 0.5f) }; + Vector3 v7 = { w*(x - 0.5f), 0, h*(z + 0.5f) }; + Vector3 v8 = { w*(x + 0.5f), 0, h*(z + 0.5f) }; + + // We check pixel color to be WHITE -> draw full cube + if (COLOR_EQUAL(pixels[z*cubicmap.width + x], WHITE)) + { + // Define triangles and checking collateral cubes + //------------------------------------------------ + + // Define top triangles (2 tris, 6 vertex --> v1-v2-v3, v1-v3-v4) + // WARNING: Not required for a WHITE cubes, created to allow seeing the map from outside + mapVertices[vCounter] = v1; + mapVertices[vCounter + 1] = v2; + mapVertices[vCounter + 2] = v3; + mapVertices[vCounter + 3] = v1; + mapVertices[vCounter + 4] = v3; + mapVertices[vCounter + 5] = v4; + vCounter += 6; + + mapNormals[nCounter] = n3; + mapNormals[nCounter + 1] = n3; + mapNormals[nCounter + 2] = n3; + mapNormals[nCounter + 3] = n3; + mapNormals[nCounter + 4] = n3; + mapNormals[nCounter + 5] = n3; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ topTexUV.x, topTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ topTexUV.x, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ topTexUV.x, topTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y }; + tcCounter += 6; + + // Define bottom triangles (2 tris, 6 vertex --> v6-v8-v7, v6-v5-v8) + mapVertices[vCounter] = v6; + mapVertices[vCounter + 1] = v8; + mapVertices[vCounter + 2] = v7; + mapVertices[vCounter + 3] = v6; + mapVertices[vCounter + 4] = v5; + mapVertices[vCounter + 5] = v8; + vCounter += 6; + + mapNormals[nCounter] = n4; + mapNormals[nCounter + 1] = n4; + mapNormals[nCounter + 2] = n4; + mapNormals[nCounter + 3] = n4; + mapNormals[nCounter + 4] = n4; + mapNormals[nCounter + 5] = n4; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ bottomTexUV.x, bottomTexUV.y }; + mapTexcoords[tcCounter + 5] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height }; + tcCounter += 6; + + // Checking cube on bottom of current cube + if (((z < cubicmap.height - 1) && COLOR_EQUAL(pixels[(z + 1)*cubicmap.width + x], BLACK)) || (z == cubicmap.height - 1)) + { + // Define front triangles (2 tris, 6 vertex) --> v2 v7 v3, v3 v7 v8 + // NOTE: Collateral occluded faces are not generated + mapVertices[vCounter] = v2; + mapVertices[vCounter + 1] = v7; + mapVertices[vCounter + 2] = v3; + mapVertices[vCounter + 3] = v3; + mapVertices[vCounter + 4] = v7; + mapVertices[vCounter + 5] = v8; + vCounter += 6; + + mapNormals[nCounter] = n6; + mapNormals[nCounter + 1] = n6; + mapNormals[nCounter + 2] = n6; + mapNormals[nCounter + 3] = n6; + mapNormals[nCounter + 4] = n6; + mapNormals[nCounter + 5] = n6; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ frontTexUV.x, frontTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ frontTexUV.x, frontTexUV.y + frontTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y }; + mapTexcoords[tcCounter + 3] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ frontTexUV.x, frontTexUV.y + frontTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y + frontTexUV.height }; + tcCounter += 6; + } + + // Checking cube on top of current cube + if (((z > 0) && COLOR_EQUAL(pixels[(z - 1)*cubicmap.width + x], BLACK)) || (z == 0)) + { + // Define back triangles (2 tris, 6 vertex) --> v1 v5 v6, v1 v4 v5 + // NOTE: Collateral occluded faces are not generated + mapVertices[vCounter] = v1; + mapVertices[vCounter + 1] = v5; + mapVertices[vCounter + 2] = v6; + mapVertices[vCounter + 3] = v1; + mapVertices[vCounter + 4] = v4; + mapVertices[vCounter + 5] = v5; + vCounter += 6; + + mapNormals[nCounter] = n5; + mapNormals[nCounter + 1] = n5; + mapNormals[nCounter + 2] = n5; + mapNormals[nCounter + 3] = n5; + mapNormals[nCounter + 4] = n5; + mapNormals[nCounter + 5] = n5; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ backTexUV.x, backTexUV.y + backTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y + backTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ backTexUV.x, backTexUV.y }; + mapTexcoords[tcCounter + 5] = (Vector2){ backTexUV.x, backTexUV.y + backTexUV.height }; + tcCounter += 6; + } + + // Checking cube on right of current cube + if (((x < cubicmap.width - 1) && COLOR_EQUAL(pixels[z*cubicmap.width + (x + 1)], BLACK)) || (x == cubicmap.width - 1)) + { + // Define right triangles (2 tris, 6 vertex) --> v3 v8 v4, v4 v8 v5 + // NOTE: Collateral occluded faces are not generated + mapVertices[vCounter] = v3; + mapVertices[vCounter + 1] = v8; + mapVertices[vCounter + 2] = v4; + mapVertices[vCounter + 3] = v4; + mapVertices[vCounter + 4] = v8; + mapVertices[vCounter + 5] = v5; + vCounter += 6; + + mapNormals[nCounter] = n1; + mapNormals[nCounter + 1] = n1; + mapNormals[nCounter + 2] = n1; + mapNormals[nCounter + 3] = n1; + mapNormals[nCounter + 4] = n1; + mapNormals[nCounter + 5] = n1; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ rightTexUV.x, rightTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ rightTexUV.x, rightTexUV.y + rightTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y }; + mapTexcoords[tcCounter + 3] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ rightTexUV.x, rightTexUV.y + rightTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y + rightTexUV.height }; + tcCounter += 6; + } + + // Checking cube on left of current cube + if (((x > 0) && COLOR_EQUAL(pixels[z*cubicmap.width + (x - 1)], BLACK)) || (x == 0)) + { + // Define left triangles (2 tris, 6 vertex) --> v1 v7 v2, v1 v6 v7 + // NOTE: Collateral occluded faces are not generated + mapVertices[vCounter] = v1; + mapVertices[vCounter + 1] = v7; + mapVertices[vCounter + 2] = v2; + mapVertices[vCounter + 3] = v1; + mapVertices[vCounter + 4] = v6; + mapVertices[vCounter + 5] = v7; + vCounter += 6; + + mapNormals[nCounter] = n2; + mapNormals[nCounter + 1] = n2; + mapNormals[nCounter + 2] = n2; + mapNormals[nCounter + 3] = n2; + mapNormals[nCounter + 4] = n2; + mapNormals[nCounter + 5] = n2; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ leftTexUV.x, leftTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y + leftTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y }; + mapTexcoords[tcCounter + 3] = (Vector2){ leftTexUV.x, leftTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ leftTexUV.x, leftTexUV.y + leftTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y + leftTexUV.height }; + tcCounter += 6; + } + } + // We check pixel color to be BLACK, we will only draw floor and roof + else if (COLOR_EQUAL(pixels[z*cubicmap.width + x], BLACK)) + { + // Define top triangles (2 tris, 6 vertex --> v1-v2-v3, v1-v3-v4) + mapVertices[vCounter] = v1; + mapVertices[vCounter + 1] = v3; + mapVertices[vCounter + 2] = v2; + mapVertices[vCounter + 3] = v1; + mapVertices[vCounter + 4] = v4; + mapVertices[vCounter + 5] = v3; + vCounter += 6; + + mapNormals[nCounter] = n4; + mapNormals[nCounter + 1] = n4; + mapNormals[nCounter + 2] = n4; + mapNormals[nCounter + 3] = n4; + mapNormals[nCounter + 4] = n4; + mapNormals[nCounter + 5] = n4; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ topTexUV.x, topTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ topTexUV.x, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ topTexUV.x, topTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y }; + mapTexcoords[tcCounter + 5] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height }; + tcCounter += 6; + + // Define bottom triangles (2 tris, 6 vertex --> v6-v8-v7, v6-v5-v8) + mapVertices[vCounter] = v6; + mapVertices[vCounter + 1] = v7; + mapVertices[vCounter + 2] = v8; + mapVertices[vCounter + 3] = v6; + mapVertices[vCounter + 4] = v8; + mapVertices[vCounter + 5] = v5; + vCounter += 6; + + mapNormals[nCounter] = n3; + mapNormals[nCounter + 1] = n3; + mapNormals[nCounter + 2] = n3; + mapNormals[nCounter + 3] = n3; + mapNormals[nCounter + 4] = n3; + mapNormals[nCounter + 5] = n3; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ bottomTexUV.x, bottomTexUV.y }; + tcCounter += 6; + } + } + } + + // Move data from mapVertices temp arrays to vertices float array + mesh.vertexCount = vCounter; + mesh.triangleCount = vCounter/3; + + mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float)); + mesh.colors = NULL; + + int fCounter = 0; + + // Move vertices data + for (int i = 0; i < vCounter; i++) + { + mesh.vertices[fCounter] = mapVertices[i].x; + mesh.vertices[fCounter + 1] = mapVertices[i].y; + mesh.vertices[fCounter + 2] = mapVertices[i].z; + fCounter += 3; + } + + fCounter = 0; + + // Move normals data + for (int i = 0; i < nCounter; i++) + { + mesh.normals[fCounter] = mapNormals[i].x; + mesh.normals[fCounter + 1] = mapNormals[i].y; + mesh.normals[fCounter + 2] = mapNormals[i].z; + fCounter += 3; + } + + fCounter = 0; + + // Move texcoords data + for (int i = 0; i < tcCounter; i++) + { + mesh.texcoords[fCounter] = mapTexcoords[i].x; + mesh.texcoords[fCounter + 1] = mapTexcoords[i].y; + fCounter += 2; + } + + RL_FREE(mapVertices); + RL_FREE(mapNormals); + RL_FREE(mapTexcoords); + + UnloadImageColors(pixels); // Unload pixels color data + + // Upload vertex data to GPU (static mesh) + UploadMesh(&mesh, false); + + return mesh; +} +#endif // SUPPORT_MESH_GENERATION + +// Compute mesh bounding box limits +// NOTE: minVertex and maxVertex should be transformed by model transform matrix +BoundingBox GetMeshBoundingBox(Mesh mesh) +{ + // Get min and max vertex to construct bounds (AABB) + Vector3 minVertex = { 0 }; + Vector3 maxVertex = { 0 }; + + if (mesh.vertices != NULL) + { + minVertex = (Vector3){ mesh.vertices[0], mesh.vertices[1], mesh.vertices[2] }; + maxVertex = (Vector3){ mesh.vertices[0], mesh.vertices[1], mesh.vertices[2] }; + + for (int i = 1; i < mesh.vertexCount; i++) + { + minVertex = Vector3Min(minVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] }); + maxVertex = Vector3Max(maxVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] }); + } + } + + // Create the bounding box + BoundingBox box = { 0 }; + box.min = minVertex; + box.max = maxVertex; + + return box; +} + +// Compute mesh tangents +// NOTE: To calculate mesh tangents and binormals we need mesh vertex positions and texture coordinates +// Implementation based on: https://answers.unity.com/questions/7789/calculating-tangents-vector4.html +void GenMeshTangents(Mesh *mesh) +{ + if ((mesh->vertices == NULL) || (mesh->texcoords == NULL)) + { + TRACELOG(LOG_WARNING, "MESH: Tangents generation requires texcoord vertex attribute data"); + return; + } + + if (mesh->tangents == NULL) mesh->tangents = (float *)RL_MALLOC(mesh->vertexCount*4*sizeof(float)); + else + { + RL_FREE(mesh->tangents); + mesh->tangents = (float *)RL_MALLOC(mesh->vertexCount*4*sizeof(float)); + } + + Vector3 *tan1 = (Vector3 *)RL_MALLOC(mesh->vertexCount*sizeof(Vector3)); + Vector3 *tan2 = (Vector3 *)RL_MALLOC(mesh->vertexCount*sizeof(Vector3)); + + if (mesh->vertexCount % 3 != 0) + { + TRACELOG(LOG_WARNING, "MESH: vertexCount expected to be a multiple of 3. Expect uninitialized values."); + } + + for (int i = 0; i <= mesh->vertexCount - 3; i += 3) + { + // Get triangle vertices + Vector3 v1 = { mesh->vertices[(i + 0)*3 + 0], mesh->vertices[(i + 0)*3 + 1], mesh->vertices[(i + 0)*3 + 2] }; + Vector3 v2 = { mesh->vertices[(i + 1)*3 + 0], mesh->vertices[(i + 1)*3 + 1], mesh->vertices[(i + 1)*3 + 2] }; + Vector3 v3 = { mesh->vertices[(i + 2)*3 + 0], mesh->vertices[(i + 2)*3 + 1], mesh->vertices[(i + 2)*3 + 2] }; + + // Get triangle texcoords + Vector2 uv1 = { mesh->texcoords[(i + 0)*2 + 0], mesh->texcoords[(i + 0)*2 + 1] }; + Vector2 uv2 = { mesh->texcoords[(i + 1)*2 + 0], mesh->texcoords[(i + 1)*2 + 1] }; + Vector2 uv3 = { mesh->texcoords[(i + 2)*2 + 0], mesh->texcoords[(i + 2)*2 + 1] }; + + float x1 = v2.x - v1.x; + float y1 = v2.y - v1.y; + float z1 = v2.z - v1.z; + float x2 = v3.x - v1.x; + float y2 = v3.y - v1.y; + float z2 = v3.z - v1.z; + + float s1 = uv2.x - uv1.x; + float t1 = uv2.y - uv1.y; + float s2 = uv3.x - uv1.x; + float t2 = uv3.y - uv1.y; + + float div = s1*t2 - s2*t1; + float r = (div == 0.0f)? 0.0f : 1.0f/div; + + Vector3 sdir = { (t2*x1 - t1*x2)*r, (t2*y1 - t1*y2)*r, (t2*z1 - t1*z2)*r }; + Vector3 tdir = { (s1*x2 - s2*x1)*r, (s1*y2 - s2*y1)*r, (s1*z2 - s2*z1)*r }; + + tan1[i + 0] = sdir; + tan1[i + 1] = sdir; + tan1[i + 2] = sdir; + + tan2[i + 0] = tdir; + tan2[i + 1] = tdir; + tan2[i + 2] = tdir; + } + + // Compute tangents considering normals + for (int i = 0; i < mesh->vertexCount; i++) + { + Vector3 normal = { mesh->normals[i*3 + 0], mesh->normals[i*3 + 1], mesh->normals[i*3 + 2] }; + Vector3 tangent = tan1[i]; + + // TODO: Review, not sure if tangent computation is right, just used reference proposed maths... +#if defined(COMPUTE_TANGENTS_METHOD_01) + Vector3 tmp = Vector3Subtract(tangent, Vector3Scale(normal, Vector3DotProduct(normal, tangent))); + tmp = Vector3Normalize(tmp); + mesh->tangents[i*4 + 0] = tmp.x; + mesh->tangents[i*4 + 1] = tmp.y; + mesh->tangents[i*4 + 2] = tmp.z; + mesh->tangents[i*4 + 3] = 1.0f; +#else + Vector3OrthoNormalize(&normal, &tangent); + mesh->tangents[i*4 + 0] = tangent.x; + mesh->tangents[i*4 + 1] = tangent.y; + mesh->tangents[i*4 + 2] = tangent.z; + mesh->tangents[i*4 + 3] = (Vector3DotProduct(Vector3CrossProduct(normal, tangent), tan2[i]) < 0.0f)? -1.0f : 1.0f; +#endif + } + + RL_FREE(tan1); + RL_FREE(tan2); + + if (mesh->vboId != NULL) + { + if (mesh->vboId[SHADER_LOC_VERTEX_TANGENT] != 0) + { + // Update existing vertex buffer + rlUpdateVertexBuffer(mesh->vboId[SHADER_LOC_VERTEX_TANGENT], mesh->tangents, mesh->vertexCount*4*sizeof(float), 0); + } + else + { + // Load a new tangent attributes buffer + mesh->vboId[SHADER_LOC_VERTEX_TANGENT] = rlLoadVertexBuffer(mesh->tangents, mesh->vertexCount*4*sizeof(float), false); + } + + rlEnableVertexArray(mesh->vaoId); + rlSetVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT, 4, RL_FLOAT, 0, 0, 0); + rlEnableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT); + rlDisableVertexArray(); + } + + TRACELOG(LOG_INFO, "MESH: Tangents data computed and uploaded for provided mesh"); +} + +// Draw a model (with texture if set) +void DrawModel(Model model, Vector3 position, float scale, Color tint) +{ + Vector3 vScale = { scale, scale, scale }; + Vector3 rotationAxis = { 0.0f, 1.0f, 0.0f }; + + DrawModelEx(model, position, rotationAxis, 0.0f, vScale, tint); +} + +// Draw a model with extended parameters +void DrawModelEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint) +{ + // Calculate transformation matrix from function parameters + // Get transform matrix (rotation -> scale -> translation) + Matrix matScale = MatrixScale(scale.x, scale.y, scale.z); + Matrix matRotation = MatrixRotate(rotationAxis, rotationAngle*DEG2RAD); + Matrix matTranslation = MatrixTranslate(position.x, position.y, position.z); + + Matrix matTransform = MatrixMultiply(MatrixMultiply(matScale, matRotation), matTranslation); + + // Combine model transformation matrix (model.transform) with matrix generated by function parameters (matTransform) + model.transform = MatrixMultiply(model.transform, matTransform); + + for (int i = 0; i < model.meshCount; i++) + { + Color color = model.materials[model.meshMaterial[i]].maps[MATERIAL_MAP_DIFFUSE].color; + + Color colorTint = WHITE; + colorTint.r = (unsigned char)(((int)color.r*(int)tint.r)/255); + colorTint.g = (unsigned char)(((int)color.g*(int)tint.g)/255); + colorTint.b = (unsigned char)(((int)color.b*(int)tint.b)/255); + colorTint.a = (unsigned char)(((int)color.a*(int)tint.a)/255); + + model.materials[model.meshMaterial[i]].maps[MATERIAL_MAP_DIFFUSE].color = colorTint; + DrawMesh(model.meshes[i], model.materials[model.meshMaterial[i]], model.transform); + model.materials[model.meshMaterial[i]].maps[MATERIAL_MAP_DIFFUSE].color = color; + } +} + +// Draw a model wires (with texture if set) +void DrawModelWires(Model model, Vector3 position, float scale, Color tint) +{ + rlEnableWireMode(); + + DrawModel(model, position, scale, tint); + + rlDisableWireMode(); +} + +// Draw a model wires (with texture if set) with extended parameters +void DrawModelWiresEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint) +{ + rlEnableWireMode(); + + DrawModelEx(model, position, rotationAxis, rotationAngle, scale, tint); + + rlDisableWireMode(); +} + +// Draw a model points +void DrawModelPoints(Model model, Vector3 position, float scale, Color tint) +{ + rlEnablePointMode(); + rlDisableBackfaceCulling(); + + DrawModel(model, position, scale, tint); + + rlEnableBackfaceCulling(); + rlDisableWireMode(); +} + +// Draw a model points +void DrawModelPointsEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint) +{ + rlEnablePointMode(); + rlDisableBackfaceCulling(); + + DrawModelEx(model, position, rotationAxis, rotationAngle, scale, tint); + + rlEnableBackfaceCulling(); + rlDisableWireMode(); +} + +// Draw a billboard +void DrawBillboard(Camera camera, Texture2D texture, Vector3 position, float scale, Color tint) +{ + Rectangle source = { 0.0f, 0.0f, (float)texture.width, (float)texture.height }; + + DrawBillboardRec(camera, texture, source, position, (Vector2) { scale*fabsf((float)source.width/source.height), scale }, tint); +} + +// Draw a billboard (part of a texture defined by a rectangle) +void DrawBillboardRec(Camera camera, Texture2D texture, Rectangle source, Vector3 position, Vector2 size, Color tint) +{ + // NOTE: Billboard locked on axis-Y + Vector3 up = { 0.0f, 1.0f, 0.0f }; + + DrawBillboardPro(camera, texture, source, position, up, size, Vector2Scale(size, 0.5), 0.0f, tint); +} + +// Draw a billboard with additional parameters +void DrawBillboardPro(Camera camera, Texture2D texture, Rectangle source, Vector3 position, Vector3 up, Vector2 size, Vector2 origin, float rotation, Color tint) +{ + // Compute the up vector and the right vector + Matrix matView = MatrixLookAt(camera.position, camera.target, camera.up); + Vector3 right = { matView.m0, matView.m4, matView.m8 }; + right = Vector3Scale(right, size.x); + up = Vector3Scale(up, size.y); + + // Flip the content of the billboard while maintaining the counterclockwise edge rendering order + if (size.x < 0.0f) + { + source.x += size.x; + source.width *= -1.0; + right = Vector3Negate(right); + origin.x *= -1.0f; + } + if (size.y < 0.0f) + { + source.y += size.y; + source.height *= -1.0; + up = Vector3Negate(up); + origin.y *= -1.0f; + } + + // Draw the texture region described by source on the following rectangle in 3D space: + // + // size.x <--. + // 3 ^---------------------------+ 2 \ rotation + // | | / + // | | + // | origin.x position | + // up |.............. | size.y + // | . | + // | . origin.y | + // | . | + // 0 +---------------------------> 1 + // right + Vector3 forward; + if (rotation != 0.0) forward = Vector3CrossProduct(right, up); + + Vector3 origin3D = Vector3Add(Vector3Scale(Vector3Normalize(right), origin.x), Vector3Scale(Vector3Normalize(up), origin.y)); + + Vector3 points[4]; + points[0] = Vector3Zero(); + points[1] = right; + points[2] = Vector3Add(up, right); + points[3] = up; + + for (int i = 0; i < 4; i++) + { + points[i] = Vector3Subtract(points[i], origin3D); + if (rotation != 0.0) points[i] = Vector3RotateByAxisAngle(points[i], forward, rotation * DEG2RAD); + points[i] = Vector3Add(points[i], position); + } + + Vector2 texcoords[4]; + texcoords[0] = (Vector2) { (float)source.x/texture.width, (float)(source.y + source.height)/texture.height }; + texcoords[1] = (Vector2) { (float)(source.x + source.width)/texture.width, (float)(source.y + source.height)/texture.height }; + texcoords[2] = (Vector2) { (float)(source.x + source.width)/texture.width, (float)source.y/texture.height }; + texcoords[3] = (Vector2) { (float)source.x/texture.width, (float)source.y/texture.height }; + + rlSetTexture(texture.id); + rlBegin(RL_QUADS); + + rlColor4ub(tint.r, tint.g, tint.b, tint.a); + for (int i = 0; i < 4; i++) + { + rlTexCoord2f(texcoords[i].x, texcoords[i].y); + rlVertex3f(points[i].x, points[i].y, points[i].z); + } + + rlEnd(); + rlSetTexture(0); +} + +// Draw a bounding box with wires +void DrawBoundingBox(BoundingBox box, Color color) +{ + Vector3 size = { 0 }; + + size.x = fabsf(box.max.x - box.min.x); + size.y = fabsf(box.max.y - box.min.y); + size.z = fabsf(box.max.z - box.min.z); + + Vector3 center = { box.min.x + size.x/2.0f, box.min.y + size.y/2.0f, box.min.z + size.z/2.0f }; + + DrawCubeWires(center, size.x, size.y, size.z, color); +} + +// Check collision between two spheres +bool CheckCollisionSpheres(Vector3 center1, float radius1, Vector3 center2, float radius2) +{ + bool collision = false; + + // Simple way to check for collision, just checking distance between two points + // Unfortunately, sqrtf() is a costly operation, so we avoid it with following solution + /* + float dx = center1.x - center2.x; // X distance between centers + float dy = center1.y - center2.y; // Y distance between centers + float dz = center1.z - center2.z; // Z distance between centers + + float distance = sqrtf(dx*dx + dy*dy + dz*dz); // Distance between centers + + if (distance <= (radius1 + radius2)) collision = true; + */ + + // Check for distances squared to avoid sqrtf() + if (Vector3DotProduct(Vector3Subtract(center2, center1), Vector3Subtract(center2, center1)) <= (radius1 + radius2)*(radius1 + radius2)) collision = true; + + return collision; +} + +// Check collision between two boxes +// NOTE: Boxes are defined by two points minimum and maximum +bool CheckCollisionBoxes(BoundingBox box1, BoundingBox box2) +{ + bool collision = true; + + if ((box1.max.x >= box2.min.x) && (box1.min.x <= box2.max.x)) + { + if ((box1.max.y < box2.min.y) || (box1.min.y > box2.max.y)) collision = false; + if ((box1.max.z < box2.min.z) || (box1.min.z > box2.max.z)) collision = false; + } + else collision = false; + + return collision; +} + +// Check collision between box and sphere +bool CheckCollisionBoxSphere(BoundingBox box, Vector3 center, float radius) +{ + bool collision = false; + + float dmin = 0; + + if (center.x < box.min.x) dmin += powf(center.x - box.min.x, 2); + else if (center.x > box.max.x) dmin += powf(center.x - box.max.x, 2); + + if (center.y < box.min.y) dmin += powf(center.y - box.min.y, 2); + else if (center.y > box.max.y) dmin += powf(center.y - box.max.y, 2); + + if (center.z < box.min.z) dmin += powf(center.z - box.min.z, 2); + else if (center.z > box.max.z) dmin += powf(center.z - box.max.z, 2); + + if (dmin <= (radius*radius)) collision = true; + + return collision; +} + +// Get collision info between ray and sphere +RayCollision GetRayCollisionSphere(Ray ray, Vector3 center, float radius) +{ + RayCollision collision = { 0 }; + + Vector3 raySpherePos = Vector3Subtract(center, ray.position); + float vector = Vector3DotProduct(raySpherePos, ray.direction); + float distance = Vector3Length(raySpherePos); + float d = radius*radius - (distance*distance - vector*vector); + + collision.hit = d >= 0.0f; + + // Check if ray origin is inside the sphere to calculate the correct collision point + if (distance < radius) + { + collision.distance = vector + sqrtf(d); + + // Calculate collision point + collision.point = Vector3Add(ray.position, Vector3Scale(ray.direction, collision.distance)); + + // Calculate collision normal (pointing outwards) + collision.normal = Vector3Negate(Vector3Normalize(Vector3Subtract(collision.point, center))); + } + else + { + collision.distance = vector - sqrtf(d); + + // Calculate collision point + collision.point = Vector3Add(ray.position, Vector3Scale(ray.direction, collision.distance)); + + // Calculate collision normal (pointing inwards) + collision.normal = Vector3Normalize(Vector3Subtract(collision.point, center)); + } + + return collision; +} + +// Get collision info between ray and box +RayCollision GetRayCollisionBox(Ray ray, BoundingBox box) +{ + RayCollision collision = { 0 }; + + // Note: If ray.position is inside the box, the distance is negative (as if the ray was reversed) + // Reversing ray.direction will give use the correct result + bool insideBox = (ray.position.x > box.min.x) && (ray.position.x < box.max.x) && + (ray.position.y > box.min.y) && (ray.position.y < box.max.y) && + (ray.position.z > box.min.z) && (ray.position.z < box.max.z); + + if (insideBox) ray.direction = Vector3Negate(ray.direction); + + float t[11] = { 0 }; + + t[8] = 1.0f/ray.direction.x; + t[9] = 1.0f/ray.direction.y; + t[10] = 1.0f/ray.direction.z; + + t[0] = (box.min.x - ray.position.x)*t[8]; + t[1] = (box.max.x - ray.position.x)*t[8]; + t[2] = (box.min.y - ray.position.y)*t[9]; + t[3] = (box.max.y - ray.position.y)*t[9]; + t[4] = (box.min.z - ray.position.z)*t[10]; + t[5] = (box.max.z - ray.position.z)*t[10]; + t[6] = (float)fmax(fmax(fmin(t[0], t[1]), fmin(t[2], t[3])), fmin(t[4], t[5])); + t[7] = (float)fmin(fmin(fmax(t[0], t[1]), fmax(t[2], t[3])), fmax(t[4], t[5])); + + collision.hit = !((t[7] < 0) || (t[6] > t[7])); + collision.distance = t[6]; + collision.point = Vector3Add(ray.position, Vector3Scale(ray.direction, collision.distance)); + + // Get box center point + collision.normal = Vector3Lerp(box.min, box.max, 0.5f); + // Get vector center point->hit point + collision.normal = Vector3Subtract(collision.point, collision.normal); + // Scale vector to unit cube + // NOTE: We use an additional .01 to fix numerical errors + collision.normal = Vector3Scale(collision.normal, 2.01f); + collision.normal = Vector3Divide(collision.normal, Vector3Subtract(box.max, box.min)); + // The relevant elements of the vector are now slightly larger than 1.0f (or smaller than -1.0f) + // and the others are somewhere between -1.0 and 1.0 casting to int is exactly our wanted normal! + collision.normal.x = (float)((int)collision.normal.x); + collision.normal.y = (float)((int)collision.normal.y); + collision.normal.z = (float)((int)collision.normal.z); + + collision.normal = Vector3Normalize(collision.normal); + + if (insideBox) + { + // Reset ray.direction + ray.direction = Vector3Negate(ray.direction); + // Fix result + collision.distance *= -1.0f; + collision.normal = Vector3Negate(collision.normal); + } + + return collision; +} + +// Get collision info between ray and mesh +RayCollision GetRayCollisionMesh(Ray ray, Mesh mesh, Matrix transform) +{ + RayCollision collision = { 0 }; + + // Check if mesh vertex data on CPU for testing + if (mesh.vertices != NULL) + { + int triangleCount = mesh.triangleCount; + + // Test against all triangles in mesh + for (int i = 0; i < triangleCount; i++) + { + Vector3 a, b, c; + Vector3* vertdata = (Vector3*)mesh.vertices; + + if (mesh.indices) + { + a = vertdata[mesh.indices[i*3 + 0]]; + b = vertdata[mesh.indices[i*3 + 1]]; + c = vertdata[mesh.indices[i*3 + 2]]; + } + else + { + a = vertdata[i*3 + 0]; + b = vertdata[i*3 + 1]; + c = vertdata[i*3 + 2]; + } + + a = Vector3Transform(a, transform); + b = Vector3Transform(b, transform); + c = Vector3Transform(c, transform); + + RayCollision triHitInfo = GetRayCollisionTriangle(ray, a, b, c); + + if (triHitInfo.hit) + { + // Save the closest hit triangle + if ((!collision.hit) || (collision.distance > triHitInfo.distance)) collision = triHitInfo; + } + } + } + + return collision; +} + +// Get collision info between ray and triangle +// NOTE: The points are expected to be in counter-clockwise winding +// NOTE: Based on https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm +RayCollision GetRayCollisionTriangle(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3) +{ + #define EPSILON 0.000001f // A small number + + RayCollision collision = { 0 }; + Vector3 edge1 = { 0 }; + Vector3 edge2 = { 0 }; + Vector3 p, q, tv; + float det, invDet, u, v, t; + + // Find vectors for two edges sharing V1 + edge1 = Vector3Subtract(p2, p1); + edge2 = Vector3Subtract(p3, p1); + + // Begin calculating determinant - also used to calculate u parameter + p = Vector3CrossProduct(ray.direction, edge2); + + // If determinant is near zero, ray lies in plane of triangle or ray is parallel to plane of triangle + det = Vector3DotProduct(edge1, p); + + // Avoid culling! + if ((det > -EPSILON) && (det < EPSILON)) return collision; + + invDet = 1.0f/det; + + // Calculate distance from V1 to ray origin + tv = Vector3Subtract(ray.position, p1); + + // Calculate u parameter and test bound + u = Vector3DotProduct(tv, p)*invDet; + + // The intersection lies outside the triangle + if ((u < 0.0f) || (u > 1.0f)) return collision; + + // Prepare to test v parameter + q = Vector3CrossProduct(tv, edge1); + + // Calculate V parameter and test bound + v = Vector3DotProduct(ray.direction, q)*invDet; + + // The intersection lies outside the triangle + if ((v < 0.0f) || ((u + v) > 1.0f)) return collision; + + t = Vector3DotProduct(edge2, q)*invDet; + + if (t > EPSILON) + { + // Ray hit, get hit point and normal + collision.hit = true; + collision.distance = t; + collision.normal = Vector3Normalize(Vector3CrossProduct(edge1, edge2)); + collision.point = Vector3Add(ray.position, Vector3Scale(ray.direction, t)); + } + + return collision; +} + +// Get collision info between ray and quad +// NOTE: The points are expected to be in counter-clockwise winding +RayCollision GetRayCollisionQuad(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3, Vector3 p4) +{ + RayCollision collision = { 0 }; + + collision = GetRayCollisionTriangle(ray, p1, p2, p4); + + if (!collision.hit) collision = GetRayCollisionTriangle(ray, p2, p3, p4); + + return collision; +} + +//---------------------------------------------------------------------------------- +// Module specific Functions Definition +//---------------------------------------------------------------------------------- +#if defined(SUPPORT_FILEFORMAT_IQM) || defined(SUPPORT_FILEFORMAT_GLTF) +// Build pose from parent joints +// NOTE: Required for animations loading (required by IQM and GLTF) +static void BuildPoseFromParentJoints(BoneInfo *bones, int boneCount, Transform *transforms) +{ + for (int i = 0; i < boneCount; i++) + { + if (bones[i].parent >= 0) + { + if (bones[i].parent > i) + { + TRACELOG(LOG_WARNING, "Assumes bones are toplogically sorted, but bone %d has parent %d. Skipping.", i, bones[i].parent); + continue; + } + transforms[i].rotation = QuaternionMultiply(transforms[bones[i].parent].rotation, transforms[i].rotation); + transforms[i].translation = Vector3RotateByQuaternion(transforms[i].translation, transforms[bones[i].parent].rotation); + transforms[i].translation = Vector3Add(transforms[i].translation, transforms[bones[i].parent].translation); + transforms[i].scale = Vector3Multiply(transforms[i].scale, transforms[bones[i].parent].scale); + } + } +} +#endif + +#if defined(SUPPORT_FILEFORMAT_OBJ) +// Load OBJ mesh data +// +// Keep the following information in mind when reading this +// - A mesh is created for every material present in the obj file +// - the model.meshCount is therefore the materialCount returned from tinyobj +// - the mesh is automatically triangulated by tinyobj +static Model LoadOBJ(const char *fileName) +{ + tinyobj_attrib_t objAttributes = { 0 }; + tinyobj_shape_t* objShapes = NULL; + unsigned int objShapeCount = 0; + + tinyobj_material_t* objMaterials = NULL; + unsigned int objMaterialCount = 0; + + Model model = { 0 }; + model.transform = MatrixIdentity(); + + char* fileText = LoadFileText(fileName); + + if (fileText == NULL) + { + TRACELOG(LOG_ERROR, "MODEL Unable to read obj file %s", fileName); + return model; + } + + char currentDir[1024] = { 0 }; + strcpy(currentDir, GetWorkingDirectory()); // Save current working directory + const char* workingDir = GetDirectoryPath(fileName); // Switch to OBJ directory for material path correctness + if (CHDIR(workingDir) != 0) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to change working directory", workingDir); + } + + unsigned int dataSize = (unsigned int)strlen(fileText); + + unsigned int flags = TINYOBJ_FLAG_TRIANGULATE; + int ret = tinyobj_parse_obj(&objAttributes, &objShapes, &objShapeCount, &objMaterials, &objMaterialCount, fileText, dataSize, flags); + + if (ret != TINYOBJ_SUCCESS) + { + TRACELOG(LOG_ERROR, "MODEL Unable to read obj data %s", fileName); + return model; + } + + UnloadFileText(fileText); + + unsigned int faceVertIndex = 0; + unsigned int nextShape = 1; + int lastMaterial = -1; + unsigned int meshIndex = 0; + + // count meshes + unsigned int nextShapeEnd = objAttributes.num_face_num_verts; + + // see how many verts till the next shape + + if (objShapeCount > 1) nextShapeEnd = objShapes[nextShape].face_offset; + + // walk all the faces + for (unsigned int faceId = 0; faceId < objAttributes.num_faces; faceId++) + { + if (faceId >= nextShapeEnd) + { + // try to find the last vert in the next shape + nextShape++; + if (nextShape < objShapeCount) nextShapeEnd = objShapes[nextShape].face_offset; + else nextShapeEnd = objAttributes.num_face_num_verts; // this is actually the total number of face verts in the file, not faces + meshIndex++; + } + else if (lastMaterial != -1 && objAttributes.material_ids[faceId] != lastMaterial) + { + meshIndex++;// if this is a new material, we need to allocate a new mesh + } + + lastMaterial = objAttributes.material_ids[faceId]; + faceVertIndex += objAttributes.face_num_verts[faceId]; + } + + // allocate the base meshes and materials + model.meshCount = meshIndex + 1; + model.meshes = (Mesh*)MemAlloc(sizeof(Mesh) * model.meshCount); + + if (objMaterialCount > 0) + { + model.materialCount = objMaterialCount; + model.materials = (Material*)MemAlloc(sizeof(Material) * objMaterialCount); + } + else // we must allocate at least one material + { + model.materialCount = 1; + model.materials = (Material*)MemAlloc(sizeof(Material) * 1); + } + + model.meshMaterial = (int*)MemAlloc(sizeof(int) * model.meshCount); + + // see how many verts are in each mesh + unsigned int* localMeshVertexCounts = (unsigned int*)MemAlloc(sizeof(unsigned int) * model.meshCount); + + faceVertIndex = 0; + nextShapeEnd = objAttributes.num_face_num_verts; + lastMaterial = -1; + meshIndex = 0; + unsigned int localMeshVertexCount = 0; + + nextShape = 1; + if (objShapeCount > 1) + nextShapeEnd = objShapes[nextShape].face_offset; + + // walk all the faces + for (unsigned int faceId = 0; faceId < objAttributes.num_faces; faceId++) + { + bool newMesh = false; // do we need a new mesh? + if (faceId >= nextShapeEnd) + { + // try to find the last vert in the next shape + nextShape++; + if (nextShape < objShapeCount) nextShapeEnd = objShapes[nextShape].face_offset; + else nextShapeEnd = objAttributes.num_face_num_verts; // this is actually the total number of face verts in the file, not faces + + newMesh = true; + } + else if (lastMaterial != -1 && objAttributes.material_ids[faceId] != lastMaterial) + { + newMesh = true; + } + + lastMaterial = objAttributes.material_ids[faceId]; + + if (newMesh) + { + localMeshVertexCounts[meshIndex] = localMeshVertexCount; + + localMeshVertexCount = 0; + meshIndex++; + } + + faceVertIndex += objAttributes.face_num_verts[faceId]; + localMeshVertexCount += objAttributes.face_num_verts[faceId]; + } + localMeshVertexCounts[meshIndex] = localMeshVertexCount; + + for (int i = 0; i < model.meshCount; i++) + { + // allocate the buffers for each mesh + unsigned int vertexCount = localMeshVertexCounts[i]; + + model.meshes[i].vertexCount = vertexCount; + model.meshes[i].triangleCount = vertexCount / 3; + + model.meshes[i].vertices = (float*)MemAlloc(sizeof(float) * vertexCount * 3); + model.meshes[i].normals = (float*)MemAlloc(sizeof(float) * vertexCount * 3); + model.meshes[i].texcoords = (float*)MemAlloc(sizeof(float) * vertexCount * 2); + model.meshes[i].colors = (unsigned char*)MemAlloc(sizeof(unsigned char) * vertexCount * 4); + } + + MemFree(localMeshVertexCounts); + localMeshVertexCounts = NULL; + + // fill meshes + faceVertIndex = 0; + + nextShapeEnd = objAttributes.num_face_num_verts; + + // see how many verts till the next shape + nextShape = 1; + if (objShapeCount > 1) nextShapeEnd = objShapes[nextShape].face_offset; + lastMaterial = -1; + meshIndex = 0; + localMeshVertexCount = 0; + + // walk all the faces + for (unsigned int faceId = 0; faceId < objAttributes.num_faces; faceId++) + { + bool newMesh = false; // do we need a new mesh? + if (faceId >= nextShapeEnd) + { + // try to find the last vert in the next shape + nextShape++; + if (nextShape < objShapeCount) nextShapeEnd = objShapes[nextShape].face_offset; + else nextShapeEnd = objAttributes.num_face_num_verts; // this is actually the total number of face verts in the file, not faces + newMesh = true; + } + // if this is a new material, we need to allocate a new mesh + if (lastMaterial != -1 && objAttributes.material_ids[faceId] != lastMaterial) newMesh = true; + lastMaterial = objAttributes.material_ids[faceId]; + + if (newMesh) + { + localMeshVertexCount = 0; + meshIndex++; + } + + int matId = 0; + if (lastMaterial >= 0 && lastMaterial < (int)objMaterialCount) + matId = lastMaterial; + + model.meshMaterial[meshIndex] = matId; + + for (int f = 0; f < objAttributes.face_num_verts[faceId]; f++) + { + int vertIndex = objAttributes.faces[faceVertIndex].v_idx; + int normalIndex = objAttributes.faces[faceVertIndex].vn_idx; + int texcordIndex = objAttributes.faces[faceVertIndex].vt_idx; + + for (int i = 0; i < 3; i++) + model.meshes[meshIndex].vertices[localMeshVertexCount * 3 + i] = objAttributes.vertices[vertIndex * 3 + i]; + + for (int i = 0; i < 3; i++) + model.meshes[meshIndex].normals[localMeshVertexCount * 3 + i] = objAttributes.normals[normalIndex * 3 + i]; + + for (int i = 0; i < 2; i++) + model.meshes[meshIndex].texcoords[localMeshVertexCount * 2 + i] = objAttributes.texcoords[texcordIndex * 2 + i]; + + model.meshes[meshIndex].texcoords[localMeshVertexCount * 2 + 1] = 1.0f - model.meshes[meshIndex].texcoords[localMeshVertexCount * 2 + 1]; + + for (int i = 0; i < 4; i++) + model.meshes[meshIndex].colors[localMeshVertexCount * 4 + i] = 255; + + faceVertIndex++; + localMeshVertexCount++; + } + } + + if (objMaterialCount > 0) ProcessMaterialsOBJ(model.materials, objMaterials, objMaterialCount); + else model.materials[0] = LoadMaterialDefault(); // Set default material for the mesh + + tinyobj_attrib_free(&objAttributes); + tinyobj_shapes_free(objShapes, objShapeCount); + tinyobj_materials_free(objMaterials, objMaterialCount); + + for (int i = 0; i < model.meshCount; i++) + UploadMesh(model.meshes + i, true); + + // Restore current working directory + if (CHDIR(currentDir) != 0) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to change working directory", currentDir); + } + + return model; +} +#endif + +#if defined(SUPPORT_FILEFORMAT_IQM) +// Load IQM mesh data +static Model LoadIQM(const char *fileName) +{ + #define IQM_MAGIC "INTERQUAKEMODEL" // IQM file magic number + #define IQM_VERSION 2 // only IQM version 2 supported + + #define BONE_NAME_LENGTH 32 // BoneInfo name string length + #define MESH_NAME_LENGTH 32 // Mesh name string length + #define MATERIAL_NAME_LENGTH 32 // Material name string length + + int dataSize = 0; + unsigned char *fileData = LoadFileData(fileName, &dataSize); + unsigned char *fileDataPtr = fileData; + + // IQM file structs + //----------------------------------------------------------------------------------- + typedef struct IQMHeader { + char magic[16]; + unsigned int version; + unsigned int dataSize; + unsigned int flags; + unsigned int num_text, ofs_text; + unsigned int num_meshes, ofs_meshes; + unsigned int num_vertexarrays, num_vertexes, ofs_vertexarrays; + unsigned int num_triangles, ofs_triangles, ofs_adjacency; + unsigned int num_joints, ofs_joints; + unsigned int num_poses, ofs_poses; + unsigned int num_anims, ofs_anims; + unsigned int num_frames, num_framechannels, ofs_frames, ofs_bounds; + unsigned int num_comment, ofs_comment; + unsigned int num_extensions, ofs_extensions; + } IQMHeader; + + typedef struct IQMMesh { + unsigned int name; + unsigned int material; + unsigned int first_vertex, num_vertexes; + unsigned int first_triangle, num_triangles; + } IQMMesh; + + typedef struct IQMTriangle { + unsigned int vertex[3]; + } IQMTriangle; + + typedef struct IQMJoint { + unsigned int name; + int parent; + float translate[3], rotate[4], scale[3]; + } IQMJoint; + + typedef struct IQMVertexArray { + unsigned int type; + unsigned int flags; + unsigned int format; + unsigned int size; + unsigned int offset; + } IQMVertexArray; + + // NOTE: Below IQM structures are not used but listed for reference + /* + typedef struct IQMAdjacency { + unsigned int triangle[3]; + } IQMAdjacency; + + typedef struct IQMPose { + int parent; + unsigned int mask; + float channeloffset[10]; + float channelscale[10]; + } IQMPose; + + typedef struct IQMAnim { + unsigned int name; + unsigned int first_frame, num_frames; + float framerate; + unsigned int flags; + } IQMAnim; + + typedef struct IQMBounds { + float bbmin[3], bbmax[3]; + float xyradius, radius; + } IQMBounds; + */ + //----------------------------------------------------------------------------------- + + // IQM vertex data types + enum { + IQM_POSITION = 0, + IQM_TEXCOORD = 1, + IQM_NORMAL = 2, + IQM_TANGENT = 3, // NOTE: Tangents unused by default + IQM_BLENDINDEXES = 4, + IQM_BLENDWEIGHTS = 5, + IQM_COLOR = 6, + IQM_CUSTOM = 0x10 // NOTE: Custom vertex values unused by default + }; + + Model model = { 0 }; + + IQMMesh *imesh = NULL; + IQMTriangle *tri = NULL; + IQMVertexArray *va = NULL; + IQMJoint *ijoint = NULL; + + float *vertex = NULL; + float *normal = NULL; + float *text = NULL; + char *blendi = NULL; + unsigned char *blendw = NULL; + unsigned char *color = NULL; + + // In case file can not be read, return an empty model + if (fileDataPtr == NULL) return model; + + const char *basePath = GetDirectoryPath(fileName); + + // Read IQM header + IQMHeader *iqmHeader = (IQMHeader *)fileDataPtr; + + if (memcmp(iqmHeader->magic, IQM_MAGIC, sizeof(IQM_MAGIC)) != 0) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] IQM file is not a valid model", fileName); + return model; + } + + if (iqmHeader->version != IQM_VERSION) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] IQM file version not supported (%i)", fileName, iqmHeader->version); + return model; + } + + //fileDataPtr += sizeof(IQMHeader); // Move file data pointer + + // Meshes data processing + imesh = RL_MALLOC(iqmHeader->num_meshes*sizeof(IQMMesh)); + //fseek(iqmFile, iqmHeader->ofs_meshes, SEEK_SET); + //fread(imesh, sizeof(IQMMesh)*iqmHeader->num_meshes, 1, iqmFile); + memcpy(imesh, fileDataPtr + iqmHeader->ofs_meshes, iqmHeader->num_meshes*sizeof(IQMMesh)); + + model.meshCount = iqmHeader->num_meshes; + model.meshes = RL_CALLOC(model.meshCount, sizeof(Mesh)); + + model.materialCount = model.meshCount; + model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material)); + model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + + char name[MESH_NAME_LENGTH] = { 0 }; + char material[MATERIAL_NAME_LENGTH] = { 0 }; + + for (int i = 0; i < model.meshCount; i++) + { + //fseek(iqmFile, iqmHeader->ofs_text + imesh[i].name, SEEK_SET); + //fread(name, sizeof(char), MESH_NAME_LENGTH, iqmFile); + memcpy(name, fileDataPtr + iqmHeader->ofs_text + imesh[i].name, MESH_NAME_LENGTH*sizeof(char)); + + //fseek(iqmFile, iqmHeader->ofs_text + imesh[i].material, SEEK_SET); + //fread(material, sizeof(char), MATERIAL_NAME_LENGTH, iqmFile); + memcpy(material, fileDataPtr + iqmHeader->ofs_text + imesh[i].material, MATERIAL_NAME_LENGTH*sizeof(char)); + + model.materials[i] = LoadMaterialDefault(); + model.materials[i].maps[MATERIAL_MAP_ALBEDO].texture = LoadTexture(TextFormat("%s/%s", basePath, material)); + + model.meshMaterial[i] = i; + + TRACELOG(LOG_DEBUG, "MODEL: [%s] mesh name (%s), material (%s)", fileName, name, material); + + model.meshes[i].vertexCount = imesh[i].num_vertexes; + + model.meshes[i].vertices = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); // Default vertex positions + model.meshes[i].normals = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); // Default vertex normals + model.meshes[i].texcoords = RL_CALLOC(model.meshes[i].vertexCount*2, sizeof(float)); // Default vertex texcoords + + model.meshes[i].boneIds = RL_CALLOC(model.meshes[i].vertexCount*4, sizeof(unsigned char)); // Up-to 4 bones supported! + model.meshes[i].boneWeights = RL_CALLOC(model.meshes[i].vertexCount*4, sizeof(float)); // Up-to 4 bones supported! + + model.meshes[i].triangleCount = imesh[i].num_triangles; + model.meshes[i].indices = RL_CALLOC(model.meshes[i].triangleCount*3, sizeof(unsigned short)); + + // Animated vertex data, what we actually process for rendering + // NOTE: Animated vertex should be re-uploaded to GPU (if not using GPU skinning) + model.meshes[i].animVertices = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); + model.meshes[i].animNormals = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); + } + + // Triangles data processing + tri = RL_MALLOC(iqmHeader->num_triangles*sizeof(IQMTriangle)); + //fseek(iqmFile, iqmHeader->ofs_triangles, SEEK_SET); + //fread(tri, sizeof(IQMTriangle), iqmHeader->num_triangles, iqmFile); + memcpy(tri, fileDataPtr + iqmHeader->ofs_triangles, iqmHeader->num_triangles*sizeof(IQMTriangle)); + + for (int m = 0; m < model.meshCount; m++) + { + int tcounter = 0; + + for (unsigned int i = imesh[m].first_triangle; i < (imesh[m].first_triangle + imesh[m].num_triangles); i++) + { + // IQM triangles indexes are stored in counter-clockwise, but raylib processes the index in linear order, + // expecting they point to the counter-clockwise vertex triangle, so we need to reverse triangle indexes + // NOTE: raylib renders vertex data in counter-clockwise order (standard convention) by default + model.meshes[m].indices[tcounter + 2] = tri[i].vertex[0] - imesh[m].first_vertex; + model.meshes[m].indices[tcounter + 1] = tri[i].vertex[1] - imesh[m].first_vertex; + model.meshes[m].indices[tcounter] = tri[i].vertex[2] - imesh[m].first_vertex; + tcounter += 3; + } + } + + // Vertex arrays data processing + va = RL_MALLOC(iqmHeader->num_vertexarrays*sizeof(IQMVertexArray)); + //fseek(iqmFile, iqmHeader->ofs_vertexarrays, SEEK_SET); + //fread(va, sizeof(IQMVertexArray), iqmHeader->num_vertexarrays, iqmFile); + memcpy(va, fileDataPtr + iqmHeader->ofs_vertexarrays, iqmHeader->num_vertexarrays*sizeof(IQMVertexArray)); + + for (unsigned int i = 0; i < iqmHeader->num_vertexarrays; i++) + { + switch (va[i].type) + { + case IQM_POSITION: + { + vertex = RL_MALLOC(iqmHeader->num_vertexes*3*sizeof(float)); + //fseek(iqmFile, va[i].offset, SEEK_SET); + //fread(vertex, iqmHeader->num_vertexes*3*sizeof(float), 1, iqmFile); + memcpy(vertex, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*3*sizeof(float)); + + for (unsigned int m = 0; m < iqmHeader->num_meshes; m++) + { + int vCounter = 0; + for (unsigned int i = imesh[m].first_vertex*3; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*3; i++) + { + model.meshes[m].vertices[vCounter] = vertex[i]; + model.meshes[m].animVertices[vCounter] = vertex[i]; + vCounter++; + } + } + } break; + case IQM_NORMAL: + { + normal = RL_MALLOC(iqmHeader->num_vertexes*3*sizeof(float)); + //fseek(iqmFile, va[i].offset, SEEK_SET); + //fread(normal, iqmHeader->num_vertexes*3*sizeof(float), 1, iqmFile); + memcpy(normal, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*3*sizeof(float)); + + for (unsigned int m = 0; m < iqmHeader->num_meshes; m++) + { + int vCounter = 0; + for (unsigned int i = imesh[m].first_vertex*3; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*3; i++) + { + model.meshes[m].normals[vCounter] = normal[i]; + model.meshes[m].animNormals[vCounter] = normal[i]; + vCounter++; + } + } + } break; + case IQM_TEXCOORD: + { + text = RL_MALLOC(iqmHeader->num_vertexes*2*sizeof(float)); + //fseek(iqmFile, va[i].offset, SEEK_SET); + //fread(text, iqmHeader->num_vertexes*2*sizeof(float), 1, iqmFile); + memcpy(text, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*2*sizeof(float)); + + for (unsigned int m = 0; m < iqmHeader->num_meshes; m++) + { + int vCounter = 0; + for (unsigned int i = imesh[m].first_vertex*2; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*2; i++) + { + model.meshes[m].texcoords[vCounter] = text[i]; + vCounter++; + } + } + } break; + case IQM_BLENDINDEXES: + { + blendi = RL_MALLOC(iqmHeader->num_vertexes*4*sizeof(char)); + //fseek(iqmFile, va[i].offset, SEEK_SET); + //fread(blendi, iqmHeader->num_vertexes*4*sizeof(char), 1, iqmFile); + memcpy(blendi, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*4*sizeof(char)); + + for (unsigned int m = 0; m < iqmHeader->num_meshes; m++) + { + int boneCounter = 0; + for (unsigned int i = imesh[m].first_vertex*4; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*4; i++) + { + model.meshes[m].boneIds[boneCounter] = blendi[i]; + boneCounter++; + } + } + } break; + case IQM_BLENDWEIGHTS: + { + blendw = RL_MALLOC(iqmHeader->num_vertexes*4*sizeof(unsigned char)); + //fseek(iqmFile, va[i].offset, SEEK_SET); + //fread(blendw, iqmHeader->num_vertexes*4*sizeof(unsigned char), 1, iqmFile); + memcpy(blendw, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*4*sizeof(unsigned char)); + + for (unsigned int m = 0; m < iqmHeader->num_meshes; m++) + { + int boneCounter = 0; + for (unsigned int i = imesh[m].first_vertex*4; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*4; i++) + { + model.meshes[m].boneWeights[boneCounter] = blendw[i]/255.0f; + boneCounter++; + } + } + } break; + case IQM_COLOR: + { + color = RL_MALLOC(iqmHeader->num_vertexes*4*sizeof(unsigned char)); + //fseek(iqmFile, va[i].offset, SEEK_SET); + //fread(blendw, iqmHeader->num_vertexes*4*sizeof(unsigned char), 1, iqmFile); + memcpy(color, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*4*sizeof(unsigned char)); + + for (unsigned int m = 0; m < iqmHeader->num_meshes; m++) + { + model.meshes[m].colors = RL_CALLOC(model.meshes[m].vertexCount*4, sizeof(unsigned char)); + + int vCounter = 0; + for (unsigned int i = imesh[m].first_vertex*4; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*4; i++) + { + model.meshes[m].colors[vCounter] = color[i]; + vCounter++; + } + } + } break; + } + } + + // Bones (joints) data processing + ijoint = RL_MALLOC(iqmHeader->num_joints*sizeof(IQMJoint)); + //fseek(iqmFile, iqmHeader->ofs_joints, SEEK_SET); + //fread(ijoint, sizeof(IQMJoint), iqmHeader->num_joints, iqmFile); + memcpy(ijoint, fileDataPtr + iqmHeader->ofs_joints, iqmHeader->num_joints*sizeof(IQMJoint)); + + model.boneCount = iqmHeader->num_joints; + model.bones = RL_MALLOC(iqmHeader->num_joints*sizeof(BoneInfo)); + model.bindPose = RL_MALLOC(iqmHeader->num_joints*sizeof(Transform)); + + for (unsigned int i = 0; i < iqmHeader->num_joints; i++) + { + // Bones + model.bones[i].parent = ijoint[i].parent; + //fseek(iqmFile, iqmHeader->ofs_text + ijoint[i].name, SEEK_SET); + //fread(model.bones[i].name, sizeof(char), BONE_NAME_LENGTH, iqmFile); + memcpy(model.bones[i].name, fileDataPtr + iqmHeader->ofs_text + ijoint[i].name, BONE_NAME_LENGTH*sizeof(char)); + + // Bind pose (base pose) + model.bindPose[i].translation.x = ijoint[i].translate[0]; + model.bindPose[i].translation.y = ijoint[i].translate[1]; + model.bindPose[i].translation.z = ijoint[i].translate[2]; + + model.bindPose[i].rotation.x = ijoint[i].rotate[0]; + model.bindPose[i].rotation.y = ijoint[i].rotate[1]; + model.bindPose[i].rotation.z = ijoint[i].rotate[2]; + model.bindPose[i].rotation.w = ijoint[i].rotate[3]; + + model.bindPose[i].scale.x = ijoint[i].scale[0]; + model.bindPose[i].scale.y = ijoint[i].scale[1]; + model.bindPose[i].scale.z = ijoint[i].scale[2]; + } + + BuildPoseFromParentJoints(model.bones, model.boneCount, model.bindPose); + + for (int i = 0; i < model.meshCount; i++) + { + model.meshes[i].boneCount = model.boneCount; + model.meshes[i].boneMatrices = RL_CALLOC(model.meshes[i].boneCount, sizeof(Matrix)); + + for (int j = 0; j < model.meshes[i].boneCount; j++) + { + model.meshes[i].boneMatrices[j] = MatrixIdentity(); + } + } + + UnloadFileData(fileData); + + RL_FREE(imesh); + RL_FREE(tri); + RL_FREE(va); + RL_FREE(vertex); + RL_FREE(normal); + RL_FREE(text); + RL_FREE(blendi); + RL_FREE(blendw); + RL_FREE(ijoint); + RL_FREE(color); + + return model; +} + +// Load IQM animation data +static ModelAnimation *LoadModelAnimationsIQM(const char *fileName, int *animCount) +{ + #define IQM_MAGIC "INTERQUAKEMODEL" // IQM file magic number + #define IQM_VERSION 2 // only IQM version 2 supported + + int dataSize = 0; + unsigned char *fileData = LoadFileData(fileName, &dataSize); + unsigned char *fileDataPtr = fileData; + + typedef struct IQMHeader { + char magic[16]; + unsigned int version; + unsigned int dataSize; + unsigned int flags; + unsigned int num_text, ofs_text; + unsigned int num_meshes, ofs_meshes; + unsigned int num_vertexarrays, num_vertexes, ofs_vertexarrays; + unsigned int num_triangles, ofs_triangles, ofs_adjacency; + unsigned int num_joints, ofs_joints; + unsigned int num_poses, ofs_poses; + unsigned int num_anims, ofs_anims; + unsigned int num_frames, num_framechannels, ofs_frames, ofs_bounds; + unsigned int num_comment, ofs_comment; + unsigned int num_extensions, ofs_extensions; + } IQMHeader; + + typedef struct IQMJoint { + unsigned int name; + int parent; + float translate[3], rotate[4], scale[3]; + } IQMJoint; + + typedef struct IQMPose { + int parent; + unsigned int mask; + float channeloffset[10]; + float channelscale[10]; + } IQMPose; + + typedef struct IQMAnim { + unsigned int name; + unsigned int first_frame, num_frames; + float framerate; + unsigned int flags; + } IQMAnim; + + // In case file can not be read, return an empty model + if (fileDataPtr == NULL) return NULL; + + // Read IQM header + IQMHeader *iqmHeader = (IQMHeader *)fileDataPtr; + + if (memcmp(iqmHeader->magic, IQM_MAGIC, sizeof(IQM_MAGIC)) != 0) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] IQM file is not a valid model", fileName); + return NULL; + } + + if (iqmHeader->version != IQM_VERSION) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] IQM file version not supported (%i)", fileName, iqmHeader->version); + return NULL; + } + + // Get bones data + IQMPose *poses = RL_MALLOC(iqmHeader->num_poses*sizeof(IQMPose)); + //fseek(iqmFile, iqmHeader->ofs_poses, SEEK_SET); + //fread(poses, sizeof(IQMPose), iqmHeader->num_poses, iqmFile); + memcpy(poses, fileDataPtr + iqmHeader->ofs_poses, iqmHeader->num_poses*sizeof(IQMPose)); + + // Get animations data + *animCount = iqmHeader->num_anims; + IQMAnim *anim = RL_MALLOC(iqmHeader->num_anims*sizeof(IQMAnim)); + //fseek(iqmFile, iqmHeader->ofs_anims, SEEK_SET); + //fread(anim, sizeof(IQMAnim), iqmHeader->num_anims, iqmFile); + memcpy(anim, fileDataPtr + iqmHeader->ofs_anims, iqmHeader->num_anims*sizeof(IQMAnim)); + + ModelAnimation *animations = RL_MALLOC(iqmHeader->num_anims*sizeof(ModelAnimation)); + + // frameposes + unsigned short *framedata = RL_MALLOC(iqmHeader->num_frames*iqmHeader->num_framechannels*sizeof(unsigned short)); + //fseek(iqmFile, iqmHeader->ofs_frames, SEEK_SET); + //fread(framedata, sizeof(unsigned short), iqmHeader->num_frames*iqmHeader->num_framechannels, iqmFile); + memcpy(framedata, fileDataPtr + iqmHeader->ofs_frames, iqmHeader->num_frames*iqmHeader->num_framechannels*sizeof(unsigned short)); + + // joints + IQMJoint *joints = RL_MALLOC(iqmHeader->num_joints*sizeof(IQMJoint)); + memcpy(joints, fileDataPtr + iqmHeader->ofs_joints, iqmHeader->num_joints*sizeof(IQMJoint)); + + for (unsigned int a = 0; a < iqmHeader->num_anims; a++) + { + animations[a].frameCount = anim[a].num_frames; + animations[a].boneCount = iqmHeader->num_poses; + animations[a].bones = RL_MALLOC(iqmHeader->num_poses*sizeof(BoneInfo)); + animations[a].framePoses = RL_MALLOC(anim[a].num_frames*sizeof(Transform *)); + memcpy(animations[a].name, fileDataPtr + iqmHeader->ofs_text + anim[a].name, 32); // I don't like this 32 here + TraceLog(LOG_INFO, "IQM Anim %s", animations[a].name); + // animations[a].framerate = anim.framerate; // TODO: Use animation framerate data? + + for (unsigned int j = 0; j < iqmHeader->num_poses; j++) + { + // If animations and skeleton are in the same file, copy bone names to anim + if (iqmHeader->num_joints > 0) + memcpy(animations[a].bones[j].name, fileDataPtr + iqmHeader->ofs_text + joints[j].name, BONE_NAME_LENGTH*sizeof(char)); + else + strcpy(animations[a].bones[j].name, "ANIMJOINTNAME"); // default bone name otherwise + animations[a].bones[j].parent = poses[j].parent; + } + + for (unsigned int j = 0; j < anim[a].num_frames; j++) animations[a].framePoses[j] = RL_MALLOC(iqmHeader->num_poses*sizeof(Transform)); + + int dcounter = anim[a].first_frame*iqmHeader->num_framechannels; + + for (unsigned int frame = 0; frame < anim[a].num_frames; frame++) + { + for (unsigned int i = 0; i < iqmHeader->num_poses; i++) + { + animations[a].framePoses[frame][i].translation.x = poses[i].channeloffset[0]; + + if (poses[i].mask & 0x01) + { + animations[a].framePoses[frame][i].translation.x += framedata[dcounter]*poses[i].channelscale[0]; + dcounter++; + } + + animations[a].framePoses[frame][i].translation.y = poses[i].channeloffset[1]; + + if (poses[i].mask & 0x02) + { + animations[a].framePoses[frame][i].translation.y += framedata[dcounter]*poses[i].channelscale[1]; + dcounter++; + } + + animations[a].framePoses[frame][i].translation.z = poses[i].channeloffset[2]; + + if (poses[i].mask & 0x04) + { + animations[a].framePoses[frame][i].translation.z += framedata[dcounter]*poses[i].channelscale[2]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation.x = poses[i].channeloffset[3]; + + if (poses[i].mask & 0x08) + { + animations[a].framePoses[frame][i].rotation.x += framedata[dcounter]*poses[i].channelscale[3]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation.y = poses[i].channeloffset[4]; + + if (poses[i].mask & 0x10) + { + animations[a].framePoses[frame][i].rotation.y += framedata[dcounter]*poses[i].channelscale[4]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation.z = poses[i].channeloffset[5]; + + if (poses[i].mask & 0x20) + { + animations[a].framePoses[frame][i].rotation.z += framedata[dcounter]*poses[i].channelscale[5]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation.w = poses[i].channeloffset[6]; + + if (poses[i].mask & 0x40) + { + animations[a].framePoses[frame][i].rotation.w += framedata[dcounter]*poses[i].channelscale[6]; + dcounter++; + } + + animations[a].framePoses[frame][i].scale.x = poses[i].channeloffset[7]; + + if (poses[i].mask & 0x80) + { + animations[a].framePoses[frame][i].scale.x += framedata[dcounter]*poses[i].channelscale[7]; + dcounter++; + } + + animations[a].framePoses[frame][i].scale.y = poses[i].channeloffset[8]; + + if (poses[i].mask & 0x100) + { + animations[a].framePoses[frame][i].scale.y += framedata[dcounter]*poses[i].channelscale[8]; + dcounter++; + } + + animations[a].framePoses[frame][i].scale.z = poses[i].channeloffset[9]; + + if (poses[i].mask & 0x200) + { + animations[a].framePoses[frame][i].scale.z += framedata[dcounter]*poses[i].channelscale[9]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation = QuaternionNormalize(animations[a].framePoses[frame][i].rotation); + } + } + + // Build frameposes + for (unsigned int frame = 0; frame < anim[a].num_frames; frame++) + { + for (int i = 0; i < animations[a].boneCount; i++) + { + if (animations[a].bones[i].parent >= 0) + { + animations[a].framePoses[frame][i].rotation = QuaternionMultiply(animations[a].framePoses[frame][animations[a].bones[i].parent].rotation, animations[a].framePoses[frame][i].rotation); + animations[a].framePoses[frame][i].translation = Vector3RotateByQuaternion(animations[a].framePoses[frame][i].translation, animations[a].framePoses[frame][animations[a].bones[i].parent].rotation); + animations[a].framePoses[frame][i].translation = Vector3Add(animations[a].framePoses[frame][i].translation, animations[a].framePoses[frame][animations[a].bones[i].parent].translation); + animations[a].framePoses[frame][i].scale = Vector3Multiply(animations[a].framePoses[frame][i].scale, animations[a].framePoses[frame][animations[a].bones[i].parent].scale); + } + } + } + } + + UnloadFileData(fileData); + + RL_FREE(joints); + RL_FREE(framedata); + RL_FREE(poses); + RL_FREE(anim); + + return animations; +} + +#endif + +#if defined(SUPPORT_FILEFORMAT_GLTF) +// Load file data callback for cgltf +static cgltf_result LoadFileGLTFCallback(const struct cgltf_memory_options *memoryOptions, const struct cgltf_file_options *fileOptions, const char *path, cgltf_size *size, void **data) +{ + int filesize; + unsigned char *filedata = LoadFileData(path, &filesize); + + if (filedata == NULL) return cgltf_result_io_error; + + *size = filesize; + *data = filedata; + + return cgltf_result_success; +} + +// Release file data callback for cgltf +static void ReleaseFileGLTFCallback(const struct cgltf_memory_options *memoryOptions, const struct cgltf_file_options *fileOptions, void *data) +{ + UnloadFileData(data); +} + +// Load image from different glTF provided methods (uri, path, buffer_view) +static Image LoadImageFromCgltfImage(cgltf_image *cgltfImage, const char *texPath) +{ + Image image = { 0 }; + + if (cgltfImage->uri != NULL) // Check if image data is provided as an uri (base64 or path) + { + if ((strlen(cgltfImage->uri) > 5) && + (cgltfImage->uri[0] == 'd') && + (cgltfImage->uri[1] == 'a') && + (cgltfImage->uri[2] == 't') && + (cgltfImage->uri[3] == 'a') && + (cgltfImage->uri[4] == ':')) // Check if image is provided as base64 text data + { + // Data URI Format: data:<mediatype>;base64,<data> + + // Find the comma + int i = 0; + while ((cgltfImage->uri[i] != ',') && (cgltfImage->uri[i] != 0)) i++; + + if (cgltfImage->uri[i] == 0) TRACELOG(LOG_WARNING, "IMAGE: glTF data URI is not a valid image"); + else + { + int base64Size = (int)strlen(cgltfImage->uri + i + 1); + while (cgltfImage->uri[i + base64Size] == '=') base64Size--; // Ignore optional paddings + int numberOfEncodedBits = base64Size*6 - (base64Size*6) % 8 ; // Encoded bits minus extra bits, so it becomes a multiple of 8 bits + int outSize = numberOfEncodedBits/8 ; // Actual encoded bytes + void *data = NULL; + + cgltf_options options = { 0 }; + options.file.read = LoadFileGLTFCallback; + options.file.release = ReleaseFileGLTFCallback; + cgltf_result result = cgltf_load_buffer_base64(&options, outSize, cgltfImage->uri + i + 1, &data); + + if (result == cgltf_result_success) + { + image = LoadImageFromMemory(".png", (unsigned char *)data, outSize); + RL_FREE(data); + } + } + } + else // Check if image is provided as image path + { + image = LoadImage(TextFormat("%s/%s", texPath, cgltfImage->uri)); + } + } + else if (cgltfImage->buffer_view->buffer->data != NULL) // Check if image is provided as data buffer + { + unsigned char *data = RL_MALLOC(cgltfImage->buffer_view->size); + int offset = (int)cgltfImage->buffer_view->offset; + int stride = (int)cgltfImage->buffer_view->stride? (int)cgltfImage->buffer_view->stride : 1; + + // Copy buffer data to memory for loading + for (unsigned int i = 0; i < cgltfImage->buffer_view->size; i++) + { + data[i] = ((unsigned char *)cgltfImage->buffer_view->buffer->data)[offset]; + offset += stride; + } + + // Check mime_type for image: (cgltfImage->mime_type == "image/png") + // NOTE: Detected that some models define mime_type as "image\\/png" + if ((strcmp(cgltfImage->mime_type, "image\\/png") == 0) || + (strcmp(cgltfImage->mime_type, "image/png") == 0)) image = LoadImageFromMemory(".png", data, (int)cgltfImage->buffer_view->size); + else if ((strcmp(cgltfImage->mime_type, "image\\/jpeg") == 0) || + (strcmp(cgltfImage->mime_type, "image/jpeg") == 0)) image = LoadImageFromMemory(".jpg", data, (int)cgltfImage->buffer_view->size); + else TRACELOG(LOG_WARNING, "MODEL: glTF image data MIME type not recognized", TextFormat("%s/%s", texPath, cgltfImage->uri)); + + RL_FREE(data); + } + + return image; +} + +// Load bone info from GLTF skin data +static BoneInfo *LoadBoneInfoGLTF(cgltf_skin skin, int *boneCount) +{ + *boneCount = (int)skin.joints_count; + BoneInfo *bones = RL_MALLOC(skin.joints_count*sizeof(BoneInfo)); + + for (unsigned int i = 0; i < skin.joints_count; i++) + { + cgltf_node node = *skin.joints[i]; + if (node.name != NULL) + { + strncpy(bones[i].name, node.name, sizeof(bones[i].name)); + bones[i].name[sizeof(bones[i].name) - 1] = '\0'; + } + + // Find parent bone index + int parentIndex = -1; + + for (unsigned int j = 0; j < skin.joints_count; j++) + { + if (skin.joints[j] == node.parent) + { + parentIndex = (int)j; + break; + } + } + + bones[i].parent = parentIndex; + } + + return bones; +} + +// Load glTF file into model struct, .gltf and .glb supported +static Model LoadGLTF(const char *fileName) +{ + /********************************************************************************************* + + Function implemented by Wilhem Barbier(@wbrbr), with modifications by Tyler Bezera(@gamerfiend) + Transform handling implemented by Paul Melis (@paulmelis). + Reviewed by Ramon Santamaria (@raysan5) + + FEATURES: + - Supports .gltf and .glb files + - Supports embedded (base64) or external textures + - Supports PBR metallic/roughness flow, loads material textures, values and colors + PBR specular/glossiness flow and extended texture flows not supported + - Supports multiple meshes per model (every primitives is loaded as a separate mesh) + - Supports basic animations + - Transforms, including parent-child relations, are applied on the mesh data, but the + hierarchy is not kept (as it can't be represented). + - Mesh instances in the glTF file (i.e. same mesh linked from multiple nodes) + are turned into separate raylib Meshes. + + RESTRICTIONS: + - Only triangle meshes supported + - Vertex attribute types and formats supported: + > Vertices (position): vec3: float + > Normals: vec3: float + > Texcoords: vec2: float + > Colors: vec4: u8, u16, f32 (normalized) + > Indices: u16, u32 (truncated to u16) + - Scenes defined in the glTF file are ignored. All nodes in the file + are used. + + ***********************************************************************************************/ + + // Macro to simplify attributes loading code + #define LOAD_ATTRIBUTE(accesor, numComp, srcType, dstPtr) LOAD_ATTRIBUTE_CAST(accesor, numComp, srcType, dstPtr, srcType) + + #define LOAD_ATTRIBUTE_CAST(accesor, numComp, srcType, dstPtr, dstType) \ + { \ + int n = 0; \ + srcType *buffer = (srcType *)accesor->buffer_view->buffer->data + accesor->buffer_view->offset/sizeof(srcType) + accesor->offset/sizeof(srcType); \ + for (unsigned int k = 0; k < accesor->count; k++) \ + {\ + for (int l = 0; l < numComp; l++) \ + {\ + dstPtr[numComp*k + l] = (dstType)buffer[n + l];\ + }\ + n += (int)(accesor->stride/sizeof(srcType));\ + }\ + } + + Model model = { 0 }; + + // glTF file loading + int dataSize = 0; + unsigned char *fileData = LoadFileData(fileName, &dataSize); + + if (fileData == NULL) return model; + + // glTF data loading + cgltf_options options = { 0 }; + options.file.read = LoadFileGLTFCallback; + options.file.release = ReleaseFileGLTFCallback; + cgltf_data *data = NULL; + cgltf_result result = cgltf_parse(&options, fileData, dataSize, &data); + + if (result == cgltf_result_success) + { + if (data->file_type == cgltf_file_type_glb) TRACELOG(LOG_INFO, "MODEL: [%s] Model basic data (glb) loaded successfully", fileName); + else if (data->file_type == cgltf_file_type_gltf) TRACELOG(LOG_INFO, "MODEL: [%s] Model basic data (glTF) loaded successfully", fileName); + else TRACELOG(LOG_WARNING, "MODEL: [%s] Model format not recognized", fileName); + + TRACELOG(LOG_INFO, " > Meshes count: %i", data->meshes_count); + TRACELOG(LOG_INFO, " > Materials count: %i (+1 default)", data->materials_count); + TRACELOG(LOG_DEBUG, " > Buffers count: %i", data->buffers_count); + TRACELOG(LOG_DEBUG, " > Images count: %i", data->images_count); + TRACELOG(LOG_DEBUG, " > Textures count: %i", data->textures_count); + + // Force reading data buffers (fills buffer_view->buffer->data) + // NOTE: If an uri is defined to base64 data or external path, it's automatically loaded + result = cgltf_load_buffers(&options, data, fileName); + if (result != cgltf_result_success) TRACELOG(LOG_INFO, "MODEL: [%s] Failed to load mesh/material buffers", fileName); + + int primitivesCount = 0; + // NOTE: We will load every primitive in the glTF as a separate raylib Mesh. + // Determine total number of meshes needed from the node hierarchy. + for (unsigned int i = 0; i < data->nodes_count; i++) + { + cgltf_node *node = &(data->nodes[i]); + cgltf_mesh *mesh = node->mesh; + if (!mesh) + continue; + + for (unsigned int p = 0; p < mesh->primitives_count; p++) + { + if (mesh->primitives[p].type == cgltf_primitive_type_triangles) + primitivesCount++; + } + } + TRACELOG(LOG_DEBUG, " > Primitives (triangles only) count based on hierarchy : %i", primitivesCount); + + // Load our model data: meshes and materials + model.meshCount = primitivesCount; + model.meshes = RL_CALLOC(model.meshCount, sizeof(Mesh)); + + // NOTE: We keep an extra slot for default material, in case some mesh requires it + model.materialCount = (int)data->materials_count + 1; + model.materials = RL_CALLOC(model.materialCount, sizeof(Material)); + model.materials[0] = LoadMaterialDefault(); // Load default material (index: 0) + + // Load mesh-material indices, by default all meshes are mapped to material index: 0 + model.meshMaterial = RL_CALLOC(model.meshCount, sizeof(int)); + + // Load materials data + //---------------------------------------------------------------------------------------------------- + for (unsigned int i = 0, j = 1; i < data->materials_count; i++, j++) + { + model.materials[j] = LoadMaterialDefault(); + const char *texPath = GetDirectoryPath(fileName); + + // Check glTF material flow: PBR metallic/roughness flow + // NOTE: Alternatively, materials can follow PBR specular/glossiness flow + if (data->materials[i].has_pbr_metallic_roughness) + { + // Load base color texture (albedo) + if (data->materials[i].pbr_metallic_roughness.base_color_texture.texture) + { + Image imAlbedo = LoadImageFromCgltfImage(data->materials[i].pbr_metallic_roughness.base_color_texture.texture->image, texPath); + if (imAlbedo.data != NULL) + { + model.materials[j].maps[MATERIAL_MAP_ALBEDO].texture = LoadTextureFromImage(imAlbedo); + UnloadImage(imAlbedo); + } + } + // Load base color factor (tint) + model.materials[j].maps[MATERIAL_MAP_ALBEDO].color.r = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[0]*255); + model.materials[j].maps[MATERIAL_MAP_ALBEDO].color.g = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[1]*255); + model.materials[j].maps[MATERIAL_MAP_ALBEDO].color.b = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[2]*255); + model.materials[j].maps[MATERIAL_MAP_ALBEDO].color.a = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[3]*255); + + // Load metallic/roughness texture + if (data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture) + { + Image imMetallicRoughness = LoadImageFromCgltfImage(data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture->image, texPath); + if (imMetallicRoughness.data != NULL) + { + model.materials[j].maps[MATERIAL_MAP_ROUGHNESS].texture = LoadTextureFromImage(imMetallicRoughness); + UnloadImage(imMetallicRoughness); + } + + // Load metallic/roughness material properties + float roughness = data->materials[i].pbr_metallic_roughness.roughness_factor; + model.materials[j].maps[MATERIAL_MAP_ROUGHNESS].value = roughness; + + float metallic = data->materials[i].pbr_metallic_roughness.metallic_factor; + model.materials[j].maps[MATERIAL_MAP_METALNESS].value = metallic; + } + + // Load normal texture + if (data->materials[i].normal_texture.texture) + { + Image imNormal = LoadImageFromCgltfImage(data->materials[i].normal_texture.texture->image, texPath); + if (imNormal.data != NULL) + { + model.materials[j].maps[MATERIAL_MAP_NORMAL].texture = LoadTextureFromImage(imNormal); + UnloadImage(imNormal); + } + } + + // Load ambient occlusion texture + if (data->materials[i].occlusion_texture.texture) + { + Image imOcclusion = LoadImageFromCgltfImage(data->materials[i].occlusion_texture.texture->image, texPath); + if (imOcclusion.data != NULL) + { + model.materials[j].maps[MATERIAL_MAP_OCCLUSION].texture = LoadTextureFromImage(imOcclusion); + UnloadImage(imOcclusion); + } + } + + // Load emissive texture + if (data->materials[i].emissive_texture.texture) + { + Image imEmissive = LoadImageFromCgltfImage(data->materials[i].emissive_texture.texture->image, texPath); + if (imEmissive.data != NULL) + { + model.materials[j].maps[MATERIAL_MAP_EMISSION].texture = LoadTextureFromImage(imEmissive); + UnloadImage(imEmissive); + } + + // Load emissive color factor + model.materials[j].maps[MATERIAL_MAP_EMISSION].color.r = (unsigned char)(data->materials[i].emissive_factor[0]*255); + model.materials[j].maps[MATERIAL_MAP_EMISSION].color.g = (unsigned char)(data->materials[i].emissive_factor[1]*255); + model.materials[j].maps[MATERIAL_MAP_EMISSION].color.b = (unsigned char)(data->materials[i].emissive_factor[2]*255); + model.materials[j].maps[MATERIAL_MAP_EMISSION].color.a = 255; + } + } + + // Other possible materials not supported by raylib pipeline: + // has_clearcoat, has_transmission, has_volume, has_ior, has specular, has_sheen + } + + // Visit each node in the hierarchy and process any mesh linked from it. + // Each primitive within a glTF node becomes a Raylib Mesh. + // The local-to-world transform of each node is used to transform the + // points/normals/tangents of the created Mesh(es). + // Any glTF mesh linked from more than one Node (i.e. instancing) + // is turned into multiple Mesh's, as each Node will have its own + // transform applied. + // Note: the code below disregards the scenes defined in the file, all nodes are used. + //---------------------------------------------------------------------------------------------------- + int meshIndex = 0; + for (unsigned int i = 0; i < data->nodes_count; i++) + { + cgltf_node *node = &(data->nodes[i]); + + cgltf_mesh *mesh = node->mesh; + if (!mesh) + continue; + + cgltf_float worldTransform[16]; + cgltf_node_transform_world(node, worldTransform); + + Matrix worldMatrix = { + worldTransform[0], worldTransform[4], worldTransform[8], worldTransform[12], + worldTransform[1], worldTransform[5], worldTransform[9], worldTransform[13], + worldTransform[2], worldTransform[6], worldTransform[10], worldTransform[14], + worldTransform[3], worldTransform[7], worldTransform[11], worldTransform[15] + }; + + Matrix worldMatrixNormals = MatrixTranspose(MatrixInvert(worldMatrix)); + + for (unsigned int p = 0; p < mesh->primitives_count; p++) + { + // NOTE: We only support primitives defined by triangles + // Other alternatives: points, lines, line_strip, triangle_strip + if (mesh->primitives[p].type != cgltf_primitive_type_triangles) continue; + + // NOTE: Attributes data could be provided in several data formats (8, 8u, 16u, 32...), + // Only some formats for each attribute type are supported, read info at the top of this function! + + for (unsigned int j = 0; j < mesh->primitives[p].attributes_count; j++) + { + // Check the different attributes for every primitive + if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_position) // POSITION, vec3, float + { + cgltf_accessor *attribute = mesh->primitives[p].attributes[j].data; + + // WARNING: SPECS: POSITION accessor MUST have its min and max properties defined + + if ((attribute->type == cgltf_type_vec3) && (attribute->component_type == cgltf_component_type_r_32f)) + { + // Init raylib mesh vertices to copy glTF attribute data + model.meshes[meshIndex].vertexCount = (int)attribute->count; + model.meshes[meshIndex].vertices = RL_MALLOC(attribute->count*3*sizeof(float)); + + // Load 3 components of float data type into mesh.vertices + LOAD_ATTRIBUTE(attribute, 3, float, model.meshes[meshIndex].vertices) + + // Transform the vertices + float *vertices = model.meshes[meshIndex].vertices; + for (unsigned int k = 0; k < attribute->count; k++) + { + Vector3 vt = Vector3Transform((Vector3){ vertices[3*k], vertices[3*k+1], vertices[3*k+2] }, worldMatrix); + vertices[3*k] = vt.x; + vertices[3*k+1] = vt.y; + vertices[3*k+2] = vt.z; + } + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Vertices attribute data format not supported, use vec3 float", fileName); + } + else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_normal) // NORMAL, vec3, float + { + cgltf_accessor *attribute = mesh->primitives[p].attributes[j].data; + + if ((attribute->type == cgltf_type_vec3) && (attribute->component_type == cgltf_component_type_r_32f)) + { + // Init raylib mesh normals to copy glTF attribute data + model.meshes[meshIndex].normals = RL_MALLOC(attribute->count*3*sizeof(float)); + + // Load 3 components of float data type into mesh.normals + LOAD_ATTRIBUTE(attribute, 3, float, model.meshes[meshIndex].normals) + + // Transform the normals + float *normals = model.meshes[meshIndex].normals; + for (unsigned int k = 0; k < attribute->count; k++) + { + Vector3 nt = Vector3Transform((Vector3){ normals[3*k], normals[3*k+1], normals[3*k+2] }, worldMatrixNormals); + normals[3*k] = nt.x; + normals[3*k+1] = nt.y; + normals[3*k+2] = nt.z; + } + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Normal attribute data format not supported, use vec3 float", fileName); + } + else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_tangent) // TANGENT, vec3, float + { + cgltf_accessor *attribute = mesh->primitives[p].attributes[j].data; + + if ((attribute->type == cgltf_type_vec4) && (attribute->component_type == cgltf_component_type_r_32f)) + { + // Init raylib mesh tangent to copy glTF attribute data + model.meshes[meshIndex].tangents = RL_MALLOC(attribute->count*4*sizeof(float)); + + // Load 4 components of float data type into mesh.tangents + LOAD_ATTRIBUTE(attribute, 4, float, model.meshes[meshIndex].tangents) + + // Transform the tangents + float *tangents = model.meshes[meshIndex].tangents; + for (unsigned int k = 0; k < attribute->count; k++) + { + Vector3 tt = Vector3Transform((Vector3){ tangents[3*k], tangents[3*k+1], tangents[3*k+2] }, worldMatrix); + tangents[3*k] = tt.x; + tangents[3*k+1] = tt.y; + tangents[3*k+2] = tt.z; + } + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Tangent attribute data format not supported, use vec4 float", fileName); + } + else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_texcoord) // TEXCOORD_n, vec2, float/u8n/u16n + { + // Support up to 2 texture coordinates attributes + float *texcoordPtr = NULL; + + cgltf_accessor *attribute = mesh->primitives[p].attributes[j].data; + + if (attribute->type == cgltf_type_vec2) + { + if (attribute->component_type == cgltf_component_type_r_32f) // vec2, float + { + // Init raylib mesh texcoords to copy glTF attribute data + texcoordPtr = (float *)RL_MALLOC(attribute->count*2*sizeof(float)); + + // Load 3 components of float data type into mesh.texcoords + LOAD_ATTRIBUTE(attribute, 2, float, texcoordPtr) + } + else if (attribute->component_type == cgltf_component_type_r_8u) // vec2, u8n + { + // Init raylib mesh texcoords to copy glTF attribute data + texcoordPtr = (float *)RL_MALLOC(attribute->count*2*sizeof(float)); + + // Load data into a temp buffer to be converted to raylib data type + unsigned char *temp = (unsigned char *)RL_MALLOC(attribute->count*2*sizeof(unsigned char)); + LOAD_ATTRIBUTE(attribute, 2, unsigned char, temp); + + // Convert data to raylib texcoord data type (float) + for (unsigned int t = 0; t < attribute->count*2; t++) texcoordPtr[t] = (float)temp[t]/255.0f; + + RL_FREE(temp); + } + else if (attribute->component_type == cgltf_component_type_r_16u) // vec2, u16n + { + // Init raylib mesh texcoords to copy glTF attribute data + texcoordPtr = (float *)RL_MALLOC(attribute->count*2*sizeof(float)); + + // Load data into a temp buffer to be converted to raylib data type + unsigned short *temp = (unsigned short *)RL_MALLOC(attribute->count*2*sizeof(unsigned short)); + LOAD_ATTRIBUTE(attribute, 2, unsigned short, temp); + + // Convert data to raylib texcoord data type (float) + for (unsigned int t = 0; t < attribute->count*2; t++) texcoordPtr[t] = (float)temp[t]/65535.0f; + + RL_FREE(temp); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Texcoords attribute data format not supported", fileName); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Texcoords attribute data format not supported, use vec2 float", fileName); + + int index = mesh->primitives[p].attributes[j].index; + if (index == 0) model.meshes[meshIndex].texcoords = texcoordPtr; + else if (index == 1) model.meshes[meshIndex].texcoords2 = texcoordPtr; + else + { + TRACELOG(LOG_WARNING, "MODEL: [%s] No more than 2 texture coordinates attributes supported", fileName); + if (texcoordPtr != NULL) RL_FREE(texcoordPtr); + } + } + else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_color) // COLOR_n, vec3/vec4, float/u8n/u16n + { + cgltf_accessor *attribute = mesh->primitives[p].attributes[j].data; + + // WARNING: SPECS: All components of each COLOR_n accessor element MUST be clamped to [0.0, 1.0] range + + if (attribute->type == cgltf_type_vec3) // RGB + { + if (attribute->component_type == cgltf_component_type_r_8u) + { + // Init raylib mesh color to copy glTF attribute data + model.meshes[meshIndex].colors = RL_MALLOC(attribute->count*4*sizeof(unsigned char)); + + // Load data into a temp buffer to be converted to raylib data type + unsigned char *temp = RL_MALLOC(attribute->count*3*sizeof(unsigned char)); + LOAD_ATTRIBUTE(attribute, 3, unsigned char, temp); + + // Convert data to raylib color data type (4 bytes) + for (unsigned int c = 0, k = 0; c < (attribute->count*4 - 3); c += 4, k += 3) + { + model.meshes[meshIndex].colors[c] = temp[k]; + model.meshes[meshIndex].colors[c + 1] = temp[k + 1]; + model.meshes[meshIndex].colors[c + 2] = temp[k + 2]; + model.meshes[meshIndex].colors[c + 3] = 255; + } + + RL_FREE(temp); + } + else if (attribute->component_type == cgltf_component_type_r_16u) + { + // Init raylib mesh color to copy glTF attribute data + model.meshes[meshIndex].colors = RL_MALLOC(attribute->count*4*sizeof(unsigned char)); + + // Load data into a temp buffer to be converted to raylib data type + unsigned short *temp = RL_MALLOC(attribute->count*3*sizeof(unsigned short)); + LOAD_ATTRIBUTE(attribute, 3, unsigned short, temp); + + // Convert data to raylib color data type (4 bytes) + for (unsigned int c = 0, k = 0; c < (attribute->count*4 - 3); c += 4, k += 3) + { + model.meshes[meshIndex].colors[c] = (unsigned char)(((float)temp[k]/65535.0f)*255.0f); + model.meshes[meshIndex].colors[c + 1] = (unsigned char)(((float)temp[k + 1]/65535.0f)*255.0f); + model.meshes[meshIndex].colors[c + 2] = (unsigned char)(((float)temp[k + 2]/65535.0f)*255.0f); + model.meshes[meshIndex].colors[c + 3] = 255; + } + + RL_FREE(temp); + } + else if (attribute->component_type == cgltf_component_type_r_32f) + { + // Init raylib mesh color to copy glTF attribute data + model.meshes[meshIndex].colors = RL_MALLOC(attribute->count*4*sizeof(unsigned char)); + + // Load data into a temp buffer to be converted to raylib data type + float *temp = RL_MALLOC(attribute->count*3*sizeof(float)); + LOAD_ATTRIBUTE(attribute, 3, float, temp); + + // Convert data to raylib color data type (4 bytes) + for (unsigned int c = 0, k = 0; c < (attribute->count*4 - 3); c += 4, k += 3) + { + model.meshes[meshIndex].colors[c] = (unsigned char)(temp[k]*255.0f); + model.meshes[meshIndex].colors[c + 1] = (unsigned char)(temp[k + 1]*255.0f); + model.meshes[meshIndex].colors[c + 2] = (unsigned char)(temp[k + 2]*255.0f); + model.meshes[meshIndex].colors[c + 3] = 255; + } + + RL_FREE(temp); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Color attribute data format not supported", fileName); + } + else if (attribute->type == cgltf_type_vec4) // RGBA + { + if (attribute->component_type == cgltf_component_type_r_8u) + { + // Init raylib mesh color to copy glTF attribute data + model.meshes[meshIndex].colors = RL_MALLOC(attribute->count*4*sizeof(unsigned char)); + + // Load 4 components of unsigned char data type into mesh.colors + LOAD_ATTRIBUTE(attribute, 4, unsigned char, model.meshes[meshIndex].colors) + } + else if (attribute->component_type == cgltf_component_type_r_16u) + { + // Init raylib mesh color to copy glTF attribute data + model.meshes[meshIndex].colors = RL_MALLOC(attribute->count*4*sizeof(unsigned char)); + + // Load data into a temp buffer to be converted to raylib data type + unsigned short *temp = RL_MALLOC(attribute->count*4*sizeof(unsigned short)); + LOAD_ATTRIBUTE(attribute, 4, unsigned short, temp); + + // Convert data to raylib color data type (4 bytes) + for (unsigned int c = 0; c < attribute->count*4; c++) model.meshes[meshIndex].colors[c] = (unsigned char)(((float)temp[c]/65535.0f)*255.0f); + + RL_FREE(temp); + } + else if (attribute->component_type == cgltf_component_type_r_32f) + { + // Init raylib mesh color to copy glTF attribute data + model.meshes[meshIndex].colors = RL_MALLOC(attribute->count*4*sizeof(unsigned char)); + + // Load data into a temp buffer to be converted to raylib data type + float *temp = RL_MALLOC(attribute->count*4*sizeof(float)); + LOAD_ATTRIBUTE(attribute, 4, float, temp); + + // Convert data to raylib color data type (4 bytes), we expect the color data normalized + for (unsigned int c = 0; c < attribute->count*4; c++) model.meshes[meshIndex].colors[c] = (unsigned char)(temp[c]*255.0f); + + RL_FREE(temp); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Color attribute data format not supported", fileName); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Color attribute data format not supported", fileName); + } + + // NOTE: Attributes related to animations are processed separately + } + + // Load primitive indices data (if provided) + if (mesh->primitives[p].indices != NULL) + { + cgltf_accessor *attribute = mesh->primitives[p].indices; + + model.meshes[meshIndex].triangleCount = (int)attribute->count/3; + + if (attribute->component_type == cgltf_component_type_r_16u) + { + // Init raylib mesh indices to copy glTF attribute data + model.meshes[meshIndex].indices = RL_MALLOC(attribute->count*sizeof(unsigned short)); + + // Load unsigned short data type into mesh.indices + LOAD_ATTRIBUTE(attribute, 1, unsigned short, model.meshes[meshIndex].indices) + } + else if (attribute->component_type == cgltf_component_type_r_8u) + { + // Init raylib mesh indices to copy glTF attribute data + model.meshes[meshIndex].indices = RL_MALLOC(attribute->count * sizeof(unsigned short)); + LOAD_ATTRIBUTE_CAST(attribute, 1, unsigned char, model.meshes[meshIndex].indices, unsigned short) + + } + else if (attribute->component_type == cgltf_component_type_r_32u) + { + // Init raylib mesh indices to copy glTF attribute data + model.meshes[meshIndex].indices = RL_MALLOC(attribute->count*sizeof(unsigned short)); + LOAD_ATTRIBUTE_CAST(attribute, 1, unsigned int, model.meshes[meshIndex].indices, unsigned short); + + TRACELOG(LOG_WARNING, "MODEL: [%s] Indices data converted from u32 to u16, possible loss of data", fileName); + } + else + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Indices data format not supported, use u16", fileName); + } + } + else model.meshes[meshIndex].triangleCount = model.meshes[meshIndex].vertexCount/3; // Unindexed mesh + + // Assign to the primitive mesh the corresponding material index + // NOTE: If no material defined, mesh uses the already assigned default material (index: 0) + for (unsigned int m = 0; m < data->materials_count; m++) + { + // The primitive actually keeps the pointer to the corresponding material, + // raylib instead assigns to the mesh the by its index, as loaded in model.materials array + // To get the index, we check if material pointers match, and we assign the corresponding index, + // skipping index 0, the default material + if (&data->materials[m] == mesh->primitives[p].material) + { + model.meshMaterial[meshIndex] = m + 1; + break; + } + } + + meshIndex++; // Move to next mesh + } + } + + // Load glTF meshes animation data + // REF: https://www.khronos.org/registry/glTF/specs/2.0/glTF-2.0.html#skins + // REF: https://www.khronos.org/registry/glTF/specs/2.0/glTF-2.0.html#skinned-mesh-attributes + // + // LIMITATIONS: + // - Only supports 1 armature per file, and skips loading it if there are multiple armatures + // - Only supports linear interpolation (default method in Blender when checked "Always Sample Animations" when exporting a GLTF file) + // - Only supports translation/rotation/scale animation channel.path, weights not considered (i.e. morph targets) + //---------------------------------------------------------------------------------------------------- + if (data->skins_count > 0) + { + cgltf_skin skin = data->skins[0]; + model.bones = LoadBoneInfoGLTF(skin, &model.boneCount); + model.bindPose = RL_MALLOC(model.boneCount*sizeof(Transform)); + + for (int i = 0; i < model.boneCount; i++) + { + cgltf_node* node = skin.joints[i]; + cgltf_float worldTransform[16]; + cgltf_node_transform_world(node, worldTransform); + Matrix worldMatrix = { + worldTransform[0], worldTransform[4], worldTransform[8], worldTransform[12], + worldTransform[1], worldTransform[5], worldTransform[9], worldTransform[13], + worldTransform[2], worldTransform[6], worldTransform[10], worldTransform[14], + worldTransform[3], worldTransform[7], worldTransform[11], worldTransform[15] + }; + MatrixDecompose(worldMatrix, &(model.bindPose[i].translation), &(model.bindPose[i].rotation), &(model.bindPose[i].scale)); + } + } + if (data->skins_count > 1) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] can only load one skin (armature) per model, but gltf skins_count == %i", fileName, data->skins_count); + } + + meshIndex = 0; + for (unsigned int i = 0; i < data->nodes_count; i++) + { + cgltf_node *node = &(data->nodes[i]); + + cgltf_mesh *mesh = node->mesh; + if (!mesh) + continue; + + for (unsigned int p = 0; p < mesh->primitives_count; p++) + { + // NOTE: We only support primitives defined by triangles + if (mesh->primitives[p].type != cgltf_primitive_type_triangles) continue; + + for (unsigned int j = 0; j < mesh->primitives[p].attributes_count; j++) + { + // NOTE: JOINTS_1 + WEIGHT_1 will be used for +4 joints influencing a vertex -> Not supported by raylib + + if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_joints) // JOINTS_n (vec4: 4 bones max per vertex / u8, u16) + { + cgltf_accessor *attribute = mesh->primitives[p].attributes[j].data; + + // NOTE: JOINTS_n can only be vec4 and u8/u16 + // SPECS: https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html#meshes-overview + + // WARNING: raylib only supports model.meshes[].boneIds as u8 (unsigned char), + // if data is provided in any other format, it is converted to supported format but + // it could imply data loss (a warning message is issued in that case) + + if (attribute->type == cgltf_type_vec4) + { + if (attribute->component_type == cgltf_component_type_r_8u) + { + // Init raylib mesh boneIds to copy glTF attribute data + model.meshes[meshIndex].boneIds = RL_CALLOC(model.meshes[meshIndex].vertexCount*4, sizeof(unsigned char)); + + // Load attribute: vec4, u8 (unsigned char) + LOAD_ATTRIBUTE(attribute, 4, unsigned char, model.meshes[meshIndex].boneIds) + } + else if (attribute->component_type == cgltf_component_type_r_16u) + { + // Init raylib mesh boneIds to copy glTF attribute data + model.meshes[meshIndex].boneIds = RL_CALLOC(model.meshes[meshIndex].vertexCount*4, sizeof(unsigned char)); + + // Load data into a temp buffer to be converted to raylib data type + unsigned short *temp = RL_CALLOC(model.meshes[meshIndex].vertexCount*4, sizeof(unsigned short)); + LOAD_ATTRIBUTE(attribute, 4, unsigned short, temp); + + // Convert data to raylib color data type (4 bytes) + bool boneIdOverflowWarning = false; + for (int b = 0; b < model.meshes[meshIndex].vertexCount*4; b++) + { + if ((temp[b] > 255) && !boneIdOverflowWarning) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Joint attribute data format (u16) overflow", fileName); + boneIdOverflowWarning = true; + } + + // Despite the possible overflow, we convert data to unsigned char + model.meshes[meshIndex].boneIds[b] = (unsigned char)temp[b]; + } + + RL_FREE(temp); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Joint attribute data format not supported", fileName); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Joint attribute data format not supported", fileName); + } + else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_weights) // WEIGHTS_n (vec4, u8n/u16n/f32) + { + cgltf_accessor *attribute = mesh->primitives[p].attributes[j].data; + + if (attribute->type == cgltf_type_vec4) + { + // TODO: Support component types: u8, u16? + if (attribute->component_type == cgltf_component_type_r_8u) + { + // Init raylib mesh bone weight to copy glTF attribute data + model.meshes[meshIndex].boneWeights = RL_CALLOC(model.meshes[meshIndex].vertexCount*4, sizeof(float)); + + // Load data into a temp buffer to be converted to raylib data type + unsigned char *temp = RL_MALLOC(attribute->count*4*sizeof(unsigned char)); + LOAD_ATTRIBUTE(attribute, 4, unsigned char, temp); + + // Convert data to raylib bone weight data type (4 bytes) + for (unsigned int b = 0; b < attribute->count*4; b++) model.meshes[meshIndex].boneWeights[b] = (float)temp[b]/255.0f; + + RL_FREE(temp); + } + else if (attribute->component_type == cgltf_component_type_r_16u) + { + // Init raylib mesh bone weight to copy glTF attribute data + model.meshes[meshIndex].boneWeights = RL_CALLOC(model.meshes[meshIndex].vertexCount*4, sizeof(float)); + + // Load data into a temp buffer to be converted to raylib data type + unsigned short *temp = RL_MALLOC(attribute->count*4*sizeof(unsigned short)); + LOAD_ATTRIBUTE(attribute, 4, unsigned short, temp); + + // Convert data to raylib bone weight data type + for (unsigned int b = 0; b < attribute->count*4; b++) model.meshes[meshIndex].boneWeights[b] = (float)temp[b]/65535.0f; + + RL_FREE(temp); + } + else if (attribute->component_type == cgltf_component_type_r_32f) + { + // Init raylib mesh bone weight to copy glTF attribute data + model.meshes[meshIndex].boneWeights = RL_CALLOC(model.meshes[meshIndex].vertexCount*4, sizeof(float)); + + // Load 4 components of float data type into mesh.boneWeights + // for cgltf_attribute_type_weights we have: + // - data.meshes[0] (256 vertices) + // - 256 values, provided as cgltf_type_vec4 of float (4 byte per joint, stride 16) + LOAD_ATTRIBUTE(attribute, 4, float, model.meshes[meshIndex].boneWeights) + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Joint weight attribute data format not supported, use vec4 float", fileName); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Joint weight attribute data format not supported, use vec4 float", fileName); + } + } + + // Animated vertex data + model.meshes[meshIndex].animVertices = RL_CALLOC(model.meshes[meshIndex].vertexCount*3, sizeof(float)); + memcpy(model.meshes[meshIndex].animVertices, model.meshes[meshIndex].vertices, model.meshes[meshIndex].vertexCount*3*sizeof(float)); + model.meshes[meshIndex].animNormals = RL_CALLOC(model.meshes[meshIndex].vertexCount*3, sizeof(float)); + if (model.meshes[meshIndex].normals != NULL) + { + memcpy(model.meshes[meshIndex].animNormals, model.meshes[meshIndex].normals, model.meshes[meshIndex].vertexCount*3*sizeof(float)); + } + + // Bone Transform Matrices + model.meshes[meshIndex].boneCount = model.boneCount; + model.meshes[meshIndex].boneMatrices = RL_CALLOC(model.meshes[meshIndex].boneCount, sizeof(Matrix)); + + for (int j = 0; j < model.meshes[meshIndex].boneCount; j++) + { + model.meshes[meshIndex].boneMatrices[j] = MatrixIdentity(); + } + + meshIndex++; // Move to next mesh + } + + } + + // Free all cgltf loaded data + cgltf_free(data); + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load glTF data", fileName); + + // WARNING: cgltf requires the file pointer available while reading data + UnloadFileData(fileData); + + return model; +} + +// Get interpolated pose for bone sampler at a specific time. Returns true on success +static bool GetPoseAtTimeGLTF(cgltf_interpolation_type interpolationType, cgltf_accessor *input, cgltf_accessor *output, float time, void *data) +{ + if (interpolationType >= cgltf_interpolation_type_max_enum) return false; + + // Input and output should have the same count + float tstart = 0.0f; + float tend = 0.0f; + int keyframe = 0; // Defaults to first pose + + for (int i = 0; i < (int)input->count - 1; i++) + { + cgltf_bool r1 = cgltf_accessor_read_float(input, i, &tstart, 1); + if (!r1) return false; + + cgltf_bool r2 = cgltf_accessor_read_float(input, i + 1, &tend, 1); + if (!r2) return false; + + if ((tstart <= time) && (time < tend)) + { + keyframe = i; + break; + } + } + + // Constant animation, no need to interpolate + if (FloatEquals(tend, tstart)) return true; + + float duration = fmaxf((tend - tstart), EPSILON); + float t = (time - tstart)/duration; + t = (t < 0.0f)? 0.0f : t; + t = (t > 1.0f)? 1.0f : t; + + if (output->component_type != cgltf_component_type_r_32f) return false; + + if (output->type == cgltf_type_vec3) + { + switch (interpolationType) + { + case cgltf_interpolation_type_step: + { + float tmp[3] = { 0.0f }; + cgltf_accessor_read_float(output, keyframe, tmp, 3); + Vector3 v1 = {tmp[0], tmp[1], tmp[2]}; + Vector3 *r = data; + + *r = v1; + } break; + case cgltf_interpolation_type_linear: + { + float tmp[3] = { 0.0f }; + cgltf_accessor_read_float(output, keyframe, tmp, 3); + Vector3 v1 = {tmp[0], tmp[1], tmp[2]}; + cgltf_accessor_read_float(output, keyframe+1, tmp, 3); + Vector3 v2 = {tmp[0], tmp[1], tmp[2]}; + Vector3 *r = data; + + *r = Vector3Lerp(v1, v2, t); + } break; + case cgltf_interpolation_type_cubic_spline: + { + float tmp[3] = { 0.0f }; + cgltf_accessor_read_float(output, 3*keyframe+1, tmp, 3); + Vector3 v1 = {tmp[0], tmp[1], tmp[2]}; + cgltf_accessor_read_float(output, 3*keyframe+2, tmp, 3); + Vector3 tangent1 = {tmp[0], tmp[1], tmp[2]}; + cgltf_accessor_read_float(output, 3*(keyframe+1)+1, tmp, 3); + Vector3 v2 = {tmp[0], tmp[1], tmp[2]}; + cgltf_accessor_read_float(output, 3*(keyframe+1), tmp, 3); + Vector3 tangent2 = {tmp[0], tmp[1], tmp[2]}; + Vector3 *r = data; + + *r = Vector3CubicHermite(v1, tangent1, v2, tangent2, t); + } break; + default: break; + } + } + else if (output->type == cgltf_type_vec4) + { + // Only v4 is for rotations, so we know it's a quaternion + switch (interpolationType) + { + case cgltf_interpolation_type_step: + { + float tmp[4] = { 0.0f }; + cgltf_accessor_read_float(output, keyframe, tmp, 4); + Vector4 v1 = {tmp[0], tmp[1], tmp[2], tmp[3]}; + Vector4 *r = data; + + *r = v1; + } break; + case cgltf_interpolation_type_linear: + { + float tmp[4] = { 0.0f }; + cgltf_accessor_read_float(output, keyframe, tmp, 4); + Vector4 v1 = {tmp[0], tmp[1], tmp[2], tmp[3]}; + cgltf_accessor_read_float(output, keyframe+1, tmp, 4); + Vector4 v2 = {tmp[0], tmp[1], tmp[2], tmp[3]}; + Vector4 *r = data; + + *r = QuaternionSlerp(v1, v2, t); + } break; + case cgltf_interpolation_type_cubic_spline: + { + float tmp[4] = { 0.0f }; + cgltf_accessor_read_float(output, 3*keyframe+1, tmp, 4); + Vector4 v1 = {tmp[0], tmp[1], tmp[2], tmp[3]}; + cgltf_accessor_read_float(output, 3*keyframe+2, tmp, 4); + Vector4 outTangent1 = {tmp[0], tmp[1], tmp[2], 0.0f}; + cgltf_accessor_read_float(output, 3*(keyframe+1)+1, tmp, 4); + Vector4 v2 = {tmp[0], tmp[1], tmp[2], tmp[3]}; + cgltf_accessor_read_float(output, 3*(keyframe+1), tmp, 4); + Vector4 inTangent2 = {tmp[0], tmp[1], tmp[2], 0.0f}; + Vector4 *r = data; + + v1 = QuaternionNormalize(v1); + v2 = QuaternionNormalize(v2); + + if (Vector4DotProduct(v1, v2) < 0.0f) + { + v2 = Vector4Negate(v2); + } + + outTangent1 = Vector4Scale(outTangent1, duration); + inTangent2 = Vector4Scale(inTangent2, duration); + + *r = QuaternionCubicHermiteSpline(v1, outTangent1, v2, inTangent2, t); + } break; + default: break; + } + } + + return true; +} + +#define GLTF_ANIMDELAY 17 // Animation frames delay, (~1000 ms/60 FPS = 16.666666* ms) + +static ModelAnimation *LoadModelAnimationsGLTF(const char *fileName, int *animCount) +{ + // glTF file loading + int dataSize = 0; + unsigned char *fileData = LoadFileData(fileName, &dataSize); + + ModelAnimation *animations = NULL; + + // glTF data loading + cgltf_options options = { 0 }; + options.file.read = LoadFileGLTFCallback; + options.file.release = ReleaseFileGLTFCallback; + cgltf_data *data = NULL; + cgltf_result result = cgltf_parse(&options, fileData, dataSize, &data); + + if (result != cgltf_result_success) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load glTF data", fileName); + *animCount = 0; + return NULL; + } + + result = cgltf_load_buffers(&options, data, fileName); + if (result != cgltf_result_success) TRACELOG(LOG_INFO, "MODEL: [%s] Failed to load animation buffers", fileName); + + if (result == cgltf_result_success) + { + if (data->skins_count > 0) + { + cgltf_skin skin = data->skins[0]; + *animCount = (int)data->animations_count; + animations = RL_MALLOC(data->animations_count*sizeof(ModelAnimation)); + + for (unsigned int i = 0; i < data->animations_count; i++) + { + animations[i].bones = LoadBoneInfoGLTF(skin, &animations[i].boneCount); + + cgltf_animation animData = data->animations[i]; + + struct Channels { + cgltf_animation_channel *translate; + cgltf_animation_channel *rotate; + cgltf_animation_channel *scale; + cgltf_interpolation_type interpolationType; + }; + + struct Channels *boneChannels = RL_CALLOC(animations[i].boneCount, sizeof(struct Channels)); + float animDuration = 0.0f; + + for (unsigned int j = 0; j < animData.channels_count; j++) + { + cgltf_animation_channel channel = animData.channels[j]; + int boneIndex = -1; + + for (unsigned int k = 0; k < skin.joints_count; k++) + { + if (animData.channels[j].target_node == skin.joints[k]) + { + boneIndex = k; + break; + } + } + + if (boneIndex == -1) + { + // Animation channel for a node not in the armature + continue; + } + + boneChannels[boneIndex].interpolationType = animData.channels[j].sampler->interpolation; + + if (animData.channels[j].sampler->interpolation != cgltf_interpolation_type_max_enum) + { + if (channel.target_path == cgltf_animation_path_type_translation) + { + boneChannels[boneIndex].translate = &animData.channels[j]; + } + else if (channel.target_path == cgltf_animation_path_type_rotation) + { + boneChannels[boneIndex].rotate = &animData.channels[j]; + } + else if (channel.target_path == cgltf_animation_path_type_scale) + { + boneChannels[boneIndex].scale = &animData.channels[j]; + } + else + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Unsupported target_path on channel %d's sampler for animation %d. Skipping.", fileName, j, i); + } + } + else TRACELOG(LOG_WARNING, "MODEL: [%s] Invalid interpolation curve encountered for GLTF animation.", fileName); + + float t = 0.0f; + cgltf_bool r = cgltf_accessor_read_float(channel.sampler->input, channel.sampler->input->count - 1, &t, 1); + + if (!r) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load input time", fileName); + continue; + } + + animDuration = (t > animDuration)? t : animDuration; + } + + if (animData.name != NULL) + { + strncpy(animations[i].name, animData.name, sizeof(animations[i].name)); + animations[i].name[sizeof(animations[i].name) - 1] = '\0'; + } + + animations[i].frameCount = (int)(animDuration*1000.0f/GLTF_ANIMDELAY) + 1; + animations[i].framePoses = RL_MALLOC(animations[i].frameCount*sizeof(Transform *)); + + for (int j = 0; j < animations[i].frameCount; j++) + { + animations[i].framePoses[j] = RL_MALLOC(animations[i].boneCount*sizeof(Transform)); + float time = ((float) j*GLTF_ANIMDELAY)/1000.0f; + + for (int k = 0; k < animations[i].boneCount; k++) + { + Vector3 translation = {skin.joints[k]->translation[0], skin.joints[k]->translation[1], skin.joints[k]->translation[2]}; + Quaternion rotation = {skin.joints[k]->rotation[0], skin.joints[k]->rotation[1], skin.joints[k]->rotation[2], skin.joints[k]->rotation[3]}; + Vector3 scale = {skin.joints[k]->scale[0], skin.joints[k]->scale[1], skin.joints[k]->scale[2]}; + + if (boneChannels[k].translate) + { + if (!GetPoseAtTimeGLTF(boneChannels[k].interpolationType, boneChannels[k].translate->sampler->input, boneChannels[k].translate->sampler->output, time, &translation)) + { + TRACELOG(LOG_INFO, "MODEL: [%s] Failed to load translate pose data for bone %s", fileName, animations[i].bones[k].name); + } + } + + if (boneChannels[k].rotate) + { + if (!GetPoseAtTimeGLTF(boneChannels[k].interpolationType, boneChannels[k].rotate->sampler->input, boneChannels[k].rotate->sampler->output, time, &rotation)) + { + TRACELOG(LOG_INFO, "MODEL: [%s] Failed to load rotate pose data for bone %s", fileName, animations[i].bones[k].name); + } + } + + if (boneChannels[k].scale) + { + if (!GetPoseAtTimeGLTF(boneChannels[k].interpolationType, boneChannels[k].scale->sampler->input, boneChannels[k].scale->sampler->output, time, &scale)) + { + TRACELOG(LOG_INFO, "MODEL: [%s] Failed to load scale pose data for bone %s", fileName, animations[i].bones[k].name); + } + } + + animations[i].framePoses[j][k] = (Transform){ + .translation = translation, + .rotation = rotation, + .scale = scale + }; + } + + BuildPoseFromParentJoints(animations[i].bones, animations[i].boneCount, animations[i].framePoses[j]); + } + + TRACELOG(LOG_INFO, "MODEL: [%s] Loaded animation: %s (%d frames, %fs)", fileName, (animData.name != NULL)? animData.name : "NULL", animations[i].frameCount, animDuration); + RL_FREE(boneChannels); + } + } + + if (data->skins_count > 1) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] expected exactly one skin to load animation data from, but found %i", fileName, data->skins_count); + } + + cgltf_free(data); + } + UnloadFileData(fileData); + return animations; +} +#endif + +#if defined(SUPPORT_FILEFORMAT_VOX) +// Load VOX (MagicaVoxel) mesh data +static Model LoadVOX(const char *fileName) +{ + Model model = { 0 }; + + int nbvertices = 0; + int meshescount = 0; + + // Read vox file into buffer + int dataSize = 0; + unsigned char *fileData = LoadFileData(fileName, &dataSize); + + if (fileData == 0) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load VOX file", fileName); + return model; + } + + // Read and build voxarray description + VoxArray3D voxarray = { 0 }; + int ret = Vox_LoadFromMemory(fileData, dataSize, &voxarray); + + if (ret != VOX_SUCCESS) + { + // Error + UnloadFileData(fileData); + + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load VOX data", fileName); + return model; + } + else + { + // Success: Compute meshes count + nbvertices = voxarray.vertices.used; + meshescount = 1 + (nbvertices/65536); + + TRACELOG(LOG_INFO, "MODEL: [%s] VOX data loaded successfully : %i vertices/%i meshes", fileName, nbvertices, meshescount); + } + + // Build models from meshes + model.transform = MatrixIdentity(); + + model.meshCount = meshescount; + model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh)); + + model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + + model.materialCount = 1; + model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material)); + model.materials[0] = LoadMaterialDefault(); + + // Init model meshes + int verticesRemain = voxarray.vertices.used; + int verticesMax = 65532; // 5461 voxels x 12 vertices per voxel -> 65532 (must be inf 65536) + + // 6*4 = 12 vertices per voxel + Vector3 *pvertices = (Vector3 *)voxarray.vertices.array; + Vector3 *pnormals = (Vector3 *)voxarray.normals.array; + Color *pcolors = (Color *)voxarray.colors.array; + + unsigned short *pindices = voxarray.indices.array; // 5461*6*6 = 196596 indices max per mesh + + int size = 0; + + for (int i = 0; i < meshescount; i++) + { + Mesh *pmesh = &model.meshes[i]; + memset(pmesh, 0, sizeof(Mesh)); + + // Copy vertices + pmesh->vertexCount = (int)fmin(verticesMax, verticesRemain); + + size = pmesh->vertexCount*sizeof(float)*3; + pmesh->vertices = (float *)RL_MALLOC(size); + memcpy(pmesh->vertices, pvertices, size); + + // Copy normals + pmesh->normals = (float *)RL_MALLOC(size); + memcpy(pmesh->normals, pnormals, size); + + // Copy indices + size = voxarray.indices.used*sizeof(unsigned short); + pmesh->indices = (unsigned short *)RL_MALLOC(size); + memcpy(pmesh->indices, pindices, size); + + pmesh->triangleCount = (pmesh->vertexCount/4)*2; + + // Copy colors + size = pmesh->vertexCount*sizeof(Color); + pmesh->colors = RL_MALLOC(size); + memcpy(pmesh->colors, pcolors, size); + + // First material index + model.meshMaterial[i] = 0; + + verticesRemain -= verticesMax; + pvertices += verticesMax; + pnormals += verticesMax; + pcolors += verticesMax; + } + + // Free buffers + Vox_FreeArrays(&voxarray); + UnloadFileData(fileData); + + return model; +} +#endif + +#if defined(SUPPORT_FILEFORMAT_M3D) +// Hook LoadFileData()/UnloadFileData() calls to M3D loaders +unsigned char *m3d_loaderhook(char *fn, unsigned int *len) { return LoadFileData((const char *)fn, (int *)len); } +void m3d_freehook(void *data) { UnloadFileData((unsigned char *)data); } + +// Load M3D mesh data +static Model LoadM3D(const char *fileName) +{ + Model model = { 0 }; + + m3d_t *m3d = NULL; + m3dp_t *prop = NULL; + int i, j, k, l, n, mi = -2, vcolor = 0; + + int dataSize = 0; + unsigned char *fileData = LoadFileData(fileName, &dataSize); + + if (fileData != NULL) + { + m3d = m3d_load(fileData, m3d_loaderhook, m3d_freehook, NULL); + + if (!m3d || M3D_ERR_ISFATAL(m3d->errcode)) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load M3D data, error code %d", fileName, m3d? m3d->errcode : -2); + if (m3d) m3d_free(m3d); + UnloadFileData(fileData); + return model; + } + else TRACELOG(LOG_INFO, "MODEL: [%s] M3D data loaded successfully: %i faces/%i materials", fileName, m3d->numface, m3d->nummaterial); + + // no face? this is probably just a material library + if (!m3d->numface) + { + m3d_free(m3d); + UnloadFileData(fileData); + return model; + } + + if (m3d->nummaterial > 0) + { + model.meshCount = model.materialCount = m3d->nummaterial; + TRACELOG(LOG_INFO, "MODEL: model has %i material meshes", model.materialCount); + } + else + { + model.meshCount = 1; model.materialCount = 0; + TRACELOG(LOG_INFO, "MODEL: No materials, putting all meshes in a default material"); + } + + // We always need a default material, so we add +1 + model.materialCount++; + + // Faces must be in non-decreasing materialid order. Verify that quickly, sorting them otherwise + // WARNING: Sorting is not needed, valid M3D model files should already be sorted + // Just keeping the sorting function for reference (Check PR #3363 #3385) + /* + for (i = 1; i < m3d->numface; i++) + { + if (m3d->face[i-1].materialid <= m3d->face[i].materialid) continue; + + // face[i-1] > face[i]. slide face[i] lower + m3df_t slider = m3d->face[i]; + j = i-1; + + do + { // face[j] > slider, face[j+1] is svailable vacant gap + m3d->face[j+1] = m3d->face[j]; + j = j-1; + } + while (j >= 0 && m3d->face[j].materialid > slider.materialid); + + m3d->face[j+1] = slider; + } + */ + + model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh)); + model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + model.materials = (Material *)RL_CALLOC(model.materialCount + 1, sizeof(Material)); + + // Map no material to index 0 with default shader, everything else materialid + 1 + model.materials[0] = LoadMaterialDefault(); + + for (i = l = 0, k = -1; i < (int)m3d->numface; i++, l++) + { + // Materials are grouped together + if (mi != m3d->face[i].materialid) + { + // there should be only one material switch per material kind, but be bulletproof for non-optimal model files + if (k + 1 >= model.meshCount) + { + model.meshCount++; + model.meshes = (Mesh *)RL_REALLOC(model.meshes, model.meshCount*sizeof(Mesh)); + memset(&model.meshes[model.meshCount - 1], 0, sizeof(Mesh)); + model.meshMaterial = (int *)RL_REALLOC(model.meshMaterial, model.meshCount*sizeof(int)); + } + + k++; + mi = m3d->face[i].materialid; + + // Only allocate colors VertexBuffer if there's a color vertex in the model for this material batch + // if all colors are fully transparent black for all verteces of this materal, then we assume no vertex colors + for (j = i, l = vcolor = 0; (j < (int)m3d->numface) && (mi == m3d->face[j].materialid); j++, l++) + { + if (!m3d->vertex[m3d->face[j].vertex[0]].color || + !m3d->vertex[m3d->face[j].vertex[1]].color || + !m3d->vertex[m3d->face[j].vertex[2]].color) vcolor = 1; + } + + model.meshes[k].vertexCount = l*3; + model.meshes[k].triangleCount = l; + model.meshes[k].vertices = (float *)RL_CALLOC(model.meshes[k].vertexCount*3, sizeof(float)); + model.meshes[k].texcoords = (float *)RL_CALLOC(model.meshes[k].vertexCount*2, sizeof(float)); + model.meshes[k].normals = (float *)RL_CALLOC(model.meshes[k].vertexCount*3, sizeof(float)); + + // If no map is provided, or we have colors defined, we allocate storage for vertex colors + // M3D specs only consider vertex colors if no material is provided, however raylib uses both and mixes the colors + if ((mi == M3D_UNDEF) || vcolor) model.meshes[k].colors = RL_CALLOC(model.meshes[k].vertexCount*4, sizeof(unsigned char)); + + // If no map is provided and we allocated vertex colors, set them to white + if ((mi == M3D_UNDEF) && (model.meshes[k].colors != NULL)) + { + for (int c = 0; c < model.meshes[k].vertexCount*4; c++) model.meshes[k].colors[c] = 255; + } + + if (m3d->numbone && m3d->numskin) + { + model.meshes[k].boneIds = (unsigned char *)RL_CALLOC(model.meshes[k].vertexCount*4, sizeof(unsigned char)); + model.meshes[k].boneWeights = (float *)RL_CALLOC(model.meshes[k].vertexCount*4, sizeof(float)); + model.meshes[k].animVertices = (float *)RL_CALLOC(model.meshes[k].vertexCount*3, sizeof(float)); + model.meshes[k].animNormals = (float *)RL_CALLOC(model.meshes[k].vertexCount*3, sizeof(float)); + } + + model.meshMaterial[k] = mi + 1; + l = 0; + } + + // Process meshes per material, add triangles + model.meshes[k].vertices[l*9 + 0] = m3d->vertex[m3d->face[i].vertex[0]].x*m3d->scale; + model.meshes[k].vertices[l*9 + 1] = m3d->vertex[m3d->face[i].vertex[0]].y*m3d->scale; + model.meshes[k].vertices[l*9 + 2] = m3d->vertex[m3d->face[i].vertex[0]].z*m3d->scale; + model.meshes[k].vertices[l*9 + 3] = m3d->vertex[m3d->face[i].vertex[1]].x*m3d->scale; + model.meshes[k].vertices[l*9 + 4] = m3d->vertex[m3d->face[i].vertex[1]].y*m3d->scale; + model.meshes[k].vertices[l*9 + 5] = m3d->vertex[m3d->face[i].vertex[1]].z*m3d->scale; + model.meshes[k].vertices[l*9 + 6] = m3d->vertex[m3d->face[i].vertex[2]].x*m3d->scale; + model.meshes[k].vertices[l*9 + 7] = m3d->vertex[m3d->face[i].vertex[2]].y*m3d->scale; + model.meshes[k].vertices[l*9 + 8] = m3d->vertex[m3d->face[i].vertex[2]].z*m3d->scale; + + // Without vertex color (full transparency), we use the default color + if (model.meshes[k].colors != NULL) + { + if (m3d->vertex[m3d->face[i].vertex[0]].color & 0xFF000000) + memcpy(&model.meshes[k].colors[l*12 + 0], &m3d->vertex[m3d->face[i].vertex[0]].color, 4); + if (m3d->vertex[m3d->face[i].vertex[1]].color & 0xFF000000) + memcpy(&model.meshes[k].colors[l*12 + 4], &m3d->vertex[m3d->face[i].vertex[1]].color, 4); + if (m3d->vertex[m3d->face[i].vertex[2]].color & 0xFF000000) + memcpy(&model.meshes[k].colors[l*12 + 8], &m3d->vertex[m3d->face[i].vertex[2]].color, 4); + } + + if (m3d->face[i].texcoord[0] != M3D_UNDEF) + { + model.meshes[k].texcoords[l*6 + 0] = m3d->tmap[m3d->face[i].texcoord[0]].u; + model.meshes[k].texcoords[l*6 + 1] = 1.0f - m3d->tmap[m3d->face[i].texcoord[0]].v; + model.meshes[k].texcoords[l*6 + 2] = m3d->tmap[m3d->face[i].texcoord[1]].u; + model.meshes[k].texcoords[l*6 + 3] = 1.0f - m3d->tmap[m3d->face[i].texcoord[1]].v; + model.meshes[k].texcoords[l*6 + 4] = m3d->tmap[m3d->face[i].texcoord[2]].u; + model.meshes[k].texcoords[l*6 + 5] = 1.0f - m3d->tmap[m3d->face[i].texcoord[2]].v; + } + + if (m3d->face[i].normal[0] != M3D_UNDEF) + { + model.meshes[k].normals[l*9 + 0] = m3d->vertex[m3d->face[i].normal[0]].x; + model.meshes[k].normals[l*9 + 1] = m3d->vertex[m3d->face[i].normal[0]].y; + model.meshes[k].normals[l*9 + 2] = m3d->vertex[m3d->face[i].normal[0]].z; + model.meshes[k].normals[l*9 + 3] = m3d->vertex[m3d->face[i].normal[1]].x; + model.meshes[k].normals[l*9 + 4] = m3d->vertex[m3d->face[i].normal[1]].y; + model.meshes[k].normals[l*9 + 5] = m3d->vertex[m3d->face[i].normal[1]].z; + model.meshes[k].normals[l*9 + 6] = m3d->vertex[m3d->face[i].normal[2]].x; + model.meshes[k].normals[l*9 + 7] = m3d->vertex[m3d->face[i].normal[2]].y; + model.meshes[k].normals[l*9 + 8] = m3d->vertex[m3d->face[i].normal[2]].z; + } + + // Add skin (vertex / bone weight pairs) + if (m3d->numbone && m3d->numskin) + { + for (n = 0; n < 3; n++) + { + int skinid = m3d->vertex[m3d->face[i].vertex[n]].skinid; + + // Check if there is a skin for this mesh, should be, just failsafe + if ((skinid != M3D_UNDEF) && (skinid < (int)m3d->numskin)) + { + for (j = 0; j < 4; j++) + { + model.meshes[k].boneIds[l*12 + n*4 + j] = m3d->skin[skinid].boneid[j]; + model.meshes[k].boneWeights[l*12 + n*4 + j] = m3d->skin[skinid].weight[j]; + } + } + else + { + // raylib does not handle boneless meshes with skeletal animations, so + // we put all vertices without a bone into a special "no bone" bone + model.meshes[k].boneIds[l*12 + n*4] = m3d->numbone; + model.meshes[k].boneWeights[l*12 + n*4] = 1.0f; + } + } + } + } + + // Load materials + for (i = 0; i < (int)m3d->nummaterial; i++) + { + model.materials[i + 1] = LoadMaterialDefault(); + + for (j = 0; j < m3d->material[i].numprop; j++) + { + prop = &m3d->material[i].prop[j]; + + switch (prop->type) + { + case m3dp_Kd: + { + memcpy(&model.materials[i + 1].maps[MATERIAL_MAP_DIFFUSE].color, &prop->value.color, 4); + model.materials[i + 1].maps[MATERIAL_MAP_DIFFUSE].value = 0.0f; + } break; + case m3dp_Ks: + { + memcpy(&model.materials[i + 1].maps[MATERIAL_MAP_SPECULAR].color, &prop->value.color, 4); + } break; + case m3dp_Ns: + { + model.materials[i + 1].maps[MATERIAL_MAP_SPECULAR].value = prop->value.fnum; + } break; + case m3dp_Ke: + { + memcpy(&model.materials[i + 1].maps[MATERIAL_MAP_EMISSION].color, &prop->value.color, 4); + model.materials[i + 1].maps[MATERIAL_MAP_EMISSION].value = 0.0f; + } break; + case m3dp_Pm: + { + model.materials[i + 1].maps[MATERIAL_MAP_METALNESS].value = prop->value.fnum; + } break; + case m3dp_Pr: + { + model.materials[i + 1].maps[MATERIAL_MAP_ROUGHNESS].value = prop->value.fnum; + } break; + case m3dp_Ps: + { + model.materials[i + 1].maps[MATERIAL_MAP_NORMAL].color = WHITE; + model.materials[i + 1].maps[MATERIAL_MAP_NORMAL].value = prop->value.fnum; + } break; + default: + { + if (prop->type >= 128) + { + Image image = { 0 }; + image.data = m3d->texture[prop->value.textureid].d; + image.width = m3d->texture[prop->value.textureid].w; + image.height = m3d->texture[prop->value.textureid].h; + image.mipmaps = 1; + image.format = (m3d->texture[prop->value.textureid].f == 4)? PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 : + ((m3d->texture[prop->value.textureid].f == 3)? PIXELFORMAT_UNCOMPRESSED_R8G8B8 : + ((m3d->texture[prop->value.textureid].f == 2)? PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA : PIXELFORMAT_UNCOMPRESSED_GRAYSCALE)); + + switch (prop->type) + { + case m3dp_map_Kd: model.materials[i + 1].maps[MATERIAL_MAP_DIFFUSE].texture = LoadTextureFromImage(image); break; + case m3dp_map_Ks: model.materials[i + 1].maps[MATERIAL_MAP_SPECULAR].texture = LoadTextureFromImage(image); break; + case m3dp_map_Ke: model.materials[i + 1].maps[MATERIAL_MAP_EMISSION].texture = LoadTextureFromImage(image); break; + case m3dp_map_Km: model.materials[i + 1].maps[MATERIAL_MAP_NORMAL].texture = LoadTextureFromImage(image); break; + case m3dp_map_Ka: model.materials[i + 1].maps[MATERIAL_MAP_OCCLUSION].texture = LoadTextureFromImage(image); break; + case m3dp_map_Pm: model.materials[i + 1].maps[MATERIAL_MAP_ROUGHNESS].texture = LoadTextureFromImage(image); break; + default: break; + } + } + } break; + } + } + } + + // Load bones + if (m3d->numbone) + { + model.boneCount = m3d->numbone + 1; + model.bones = RL_CALLOC(model.boneCount, sizeof(BoneInfo)); + model.bindPose = RL_CALLOC(model.boneCount, sizeof(Transform)); + + for (i = 0; i < (int)m3d->numbone; i++) + { + model.bones[i].parent = m3d->bone[i].parent; + strncpy(model.bones[i].name, m3d->bone[i].name, sizeof(model.bones[i].name)); + model.bindPose[i].translation.x = m3d->vertex[m3d->bone[i].pos].x*m3d->scale; + model.bindPose[i].translation.y = m3d->vertex[m3d->bone[i].pos].y*m3d->scale; + model.bindPose[i].translation.z = m3d->vertex[m3d->bone[i].pos].z*m3d->scale; + model.bindPose[i].rotation.x = m3d->vertex[m3d->bone[i].ori].x; + model.bindPose[i].rotation.y = m3d->vertex[m3d->bone[i].ori].y; + model.bindPose[i].rotation.z = m3d->vertex[m3d->bone[i].ori].z; + model.bindPose[i].rotation.w = m3d->vertex[m3d->bone[i].ori].w; + + // TODO: If the orientation quaternion is not normalized, then that's encoding scaling + model.bindPose[i].rotation = QuaternionNormalize(model.bindPose[i].rotation); + model.bindPose[i].scale.x = model.bindPose[i].scale.y = model.bindPose[i].scale.z = 1.0f; + + // Child bones are stored in parent bone relative space, convert that into model space + if (model.bones[i].parent >= 0) + { + model.bindPose[i].rotation = QuaternionMultiply(model.bindPose[model.bones[i].parent].rotation, model.bindPose[i].rotation); + model.bindPose[i].translation = Vector3RotateByQuaternion(model.bindPose[i].translation, model.bindPose[model.bones[i].parent].rotation); + model.bindPose[i].translation = Vector3Add(model.bindPose[i].translation, model.bindPose[model.bones[i].parent].translation); + model.bindPose[i].scale = Vector3Multiply(model.bindPose[i].scale, model.bindPose[model.bones[i].parent].scale); + } + } + + // Add a special "no bone" bone + model.bones[i].parent = -1; + strcpy(model.bones[i].name, "NO BONE"); + model.bindPose[i].translation.x = 0.0f; + model.bindPose[i].translation.y = 0.0f; + model.bindPose[i].translation.z = 0.0f; + model.bindPose[i].rotation.x = 0.0f; + model.bindPose[i].rotation.y = 0.0f; + model.bindPose[i].rotation.z = 0.0f; + model.bindPose[i].rotation.w = 1.0f; + model.bindPose[i].scale.x = model.bindPose[i].scale.y = model.bindPose[i].scale.z = 1.0f; + } + + // Load bone-pose default mesh into animation vertices. These will be updated when UpdateModelAnimation gets + // called, but not before, however DrawMesh uses these if they exist (so not good if they are left empty) + if (m3d->numbone && m3d->numskin) + { + for (i = 0; i < model.meshCount; i++) + { + memcpy(model.meshes[i].animVertices, model.meshes[i].vertices, model.meshes[i].vertexCount*3*sizeof(float)); + memcpy(model.meshes[i].animNormals, model.meshes[i].normals, model.meshes[i].vertexCount*3*sizeof(float)); + + model.meshes[i].boneCount = model.boneCount; + model.meshes[i].boneMatrices = RL_CALLOC(model.meshes[i].boneCount, sizeof(Matrix)); + for (j = 0; j < model.meshes[i].boneCount; j++) + { + model.meshes[i].boneMatrices[j] = MatrixIdentity(); + } + } + } + + m3d_free(m3d); + UnloadFileData(fileData); + } + + return model; +} + +#define M3D_ANIMDELAY 17 // Animation frames delay, (~1000 ms/60 FPS = 16.666666* ms) + +// Load M3D animation data +static ModelAnimation *LoadModelAnimationsM3D(const char *fileName, int *animCount) +{ + ModelAnimation *animations = NULL; + + m3d_t *m3d = NULL; + int i = 0, j = 0; + *animCount = 0; + + int dataSize = 0; + unsigned char *fileData = LoadFileData(fileName, &dataSize); + + if (fileData != NULL) + { + m3d = m3d_load(fileData, m3d_loaderhook, m3d_freehook, NULL); + + if (!m3d || M3D_ERR_ISFATAL(m3d->errcode)) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load M3D data, error code %d", fileName, m3d? m3d->errcode : -2); + UnloadFileData(fileData); + return NULL; + } + else TRACELOG(LOG_INFO, "MODEL: [%s] M3D data loaded successfully: %i animations, %i bones, %i skins", fileName, + m3d->numaction, m3d->numbone, m3d->numskin); + + // No animation or bone+skin? + if (!m3d->numaction || !m3d->numbone || !m3d->numskin) + { + m3d_free(m3d); + UnloadFileData(fileData); + return NULL; + } + + animations = RL_MALLOC(m3d->numaction*sizeof(ModelAnimation)); + *animCount = m3d->numaction; + + for (unsigned int a = 0; a < m3d->numaction; a++) + { + animations[a].frameCount = m3d->action[a].durationmsec/M3D_ANIMDELAY; + animations[a].boneCount = m3d->numbone + 1; + animations[a].bones = RL_MALLOC((m3d->numbone + 1)*sizeof(BoneInfo)); + animations[a].framePoses = RL_MALLOC(animations[a].frameCount*sizeof(Transform *)); + strncpy(animations[a].name, m3d->action[a].name, sizeof(animations[a].name)); + animations[a].name[sizeof(animations[a].name) - 1] = '\0'; + + TRACELOG(LOG_INFO, "MODEL: [%s] animation #%i: %i msec, %i frames", fileName, a, m3d->action[a].durationmsec, animations[a].frameCount); + + for (i = 0; i < (int)m3d->numbone; i++) + { + animations[a].bones[i].parent = m3d->bone[i].parent; + strncpy(animations[a].bones[i].name, m3d->bone[i].name, sizeof(animations[a].bones[i].name)); + } + + // A special, never transformed "no bone" bone, used for boneless vertices + animations[a].bones[i].parent = -1; + strcpy(animations[a].bones[i].name, "NO BONE"); + + // M3D stores frames at arbitrary intervals with sparse skeletons. We need full skeletons at + // regular intervals, so let the M3D SDK do the heavy lifting and calculate interpolated bones + for (i = 0; i < animations[a].frameCount; i++) + { + animations[a].framePoses[i] = RL_MALLOC((m3d->numbone + 1)*sizeof(Transform)); + + m3db_t *pose = m3d_pose(m3d, a, i*M3D_ANIMDELAY); + + if (pose != NULL) + { + for (j = 0; j < (int)m3d->numbone; j++) + { + animations[a].framePoses[i][j].translation.x = m3d->vertex[pose[j].pos].x*m3d->scale; + animations[a].framePoses[i][j].translation.y = m3d->vertex[pose[j].pos].y*m3d->scale; + animations[a].framePoses[i][j].translation.z = m3d->vertex[pose[j].pos].z*m3d->scale; + animations[a].framePoses[i][j].rotation.x = m3d->vertex[pose[j].ori].x; + animations[a].framePoses[i][j].rotation.y = m3d->vertex[pose[j].ori].y; + animations[a].framePoses[i][j].rotation.z = m3d->vertex[pose[j].ori].z; + animations[a].framePoses[i][j].rotation.w = m3d->vertex[pose[j].ori].w; + animations[a].framePoses[i][j].rotation = QuaternionNormalize(animations[a].framePoses[i][j].rotation); + animations[a].framePoses[i][j].scale.x = animations[a].framePoses[i][j].scale.y = animations[a].framePoses[i][j].scale.z = 1.0f; + + // Child bones are stored in parent bone relative space, convert that into model space + if (animations[a].bones[j].parent >= 0) + { + animations[a].framePoses[i][j].rotation = QuaternionMultiply(animations[a].framePoses[i][animations[a].bones[j].parent].rotation, animations[a].framePoses[i][j].rotation); + animations[a].framePoses[i][j].translation = Vector3RotateByQuaternion(animations[a].framePoses[i][j].translation, animations[a].framePoses[i][animations[a].bones[j].parent].rotation); + animations[a].framePoses[i][j].translation = Vector3Add(animations[a].framePoses[i][j].translation, animations[a].framePoses[i][animations[a].bones[j].parent].translation); + animations[a].framePoses[i][j].scale = Vector3Multiply(animations[a].framePoses[i][j].scale, animations[a].framePoses[i][animations[a].bones[j].parent].scale); + } + } + + // Default transform for the "no bone" bone + animations[a].framePoses[i][j].translation.x = 0.0f; + animations[a].framePoses[i][j].translation.y = 0.0f; + animations[a].framePoses[i][j].translation.z = 0.0f; + animations[a].framePoses[i][j].rotation.x = 0.0f; + animations[a].framePoses[i][j].rotation.y = 0.0f; + animations[a].framePoses[i][j].rotation.z = 0.0f; + animations[a].framePoses[i][j].rotation.w = 1.0f; + animations[a].framePoses[i][j].scale.x = animations[a].framePoses[i][j].scale.y = animations[a].framePoses[i][j].scale.z = 1.0f; + RL_FREE(pose); + } + } + } + + m3d_free(m3d); + UnloadFileData(fileData); + } + + return animations; +} +#endif + +#endif // SUPPORT_MODULE_RMODELS |